{"id":370,"date":"2012-05-24T13:54:21","date_gmt":"2012-05-24T13:54:21","guid":{"rendered":"http:\/\/www.chemicool.com\/elements\/?page_id=370"},"modified":"2017-12-07T02:08:08","modified_gmt":"2017-12-07T07:08:08","slug":"molybdenum","status":"publish","type":"page","link":"https:\/\/www.chemicool.com\/elements\/molybdenum.html","title":{"rendered":"Molybdenum Element Facts"},"content":{"rendered":"<div class=\"insidepagelinks\">\n<a href=\"#data\">Data Zone<\/a> |  <a href=\"#discovery\">Discovery<\/a> |  <a href=\"#facts\">Facts<\/a> | <a href=\"#appear\">Appearance &amp; Characteristics<\/a> | <a href=\"#uses\">Uses<\/a> | <a href=\"#abund\">Abundance &amp; Isotopes<\/a>  | <a href=\"#refer\">References<\/a>\n<\/div>\n<div class=\"tmetalsT\">\n<div class=\"atnorT\">42<\/div>\n<div class=\"clearT\"><\/div>\n<div class=\"elnamT\">Mo<\/div>\n<div class=\"atweiT\"> 95.94<\/div>\n<\/div>\n<p>The chemical element molybdenum is classed as a transition metal. It was discovered in 1778 by Carl W. Scheele.<\/p>\n<div style=\"clear:both;\"><\/div>\n<div class=\"adsense300\">\n<div class=\"adsense300spacer\">\n<div style=\"line-height:10px;\"><img decoding=\"async\" src=\"\/\/www.chemicool.com\/ad.png\" alt=\"\" \/><\/div>\n<p><script async src=\"\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js\"><\/script><ins class=\"adsbygoogle\" style=\"display: block;\" data-ad-client=\"ca-pub-9461632227417539\" data-ad-slot=\"8753977201\" data-ad-format=\"auto\"><\/ins><script>(adsbygoogle = window.adsbygoogle || []).push({});<\/script><\/p>\n<p><a id=\"data\"><\/a><\/p>\n<h2>Data Zone<\/h2>\n<table class=\"datatop\">\n<tr>\n<td class=\"elemglb\">Classification:<\/td>\n<td> Molybdenum is a transition metal   <\/td>\n<\/tr>\n<tr>\n<td class=\"elemglb\">Color:<\/td>\n<td>  silvery-white  <\/td>\n<\/tr>\n<tr>\n<td class=\"elemglb\">Atomic weight:<\/td>\n<td>   95.94 <\/td>\n<\/tr>\n<tr>\n<td class=\"elemglb\">State:<\/td>\n<td>    solid   <\/td>\n<\/tr>\n<tr>\n<td class=\"elemglb\">Melting point:<\/td>\n<td> 2623 <sup>o<\/sup>C, 2896 K    <\/td>\n<\/tr>\n<tr>\n<td class=\"elemglb\">Boiling point:<\/td>\n<td>  4640 <sup>o<\/sup>C, 4913  K     <\/td>\n<\/tr>\n<tr>\n<td class=\"elemglb\">Electrons:<\/td>\n<td>42<\/td>\n<\/tr>\n<tr>\n<td class=\"elemglb\">Protons:<\/td>\n<td>42<\/td>\n<\/tr>\n<tr>\n<td class=\"elemglb\">Neutrons in most abundant isotope:<\/td>\n<td>56<\/td>\n<\/tr>\n<tr>\n<td class=\"elemglb\">Electron shells:<\/td>\n<td>   2,8,18,13,1    <\/td>\n<\/tr>\n<tr>\n<td class=\"elemglb\">Electron configuration:<\/td>\n<td>   [Kr]  4d<sup>5<\/sup> 5s<sup>1<\/sup>    <\/td>\n<\/tr>\n<tr>\n<td class=\"elemglb\">Density @ 20<sup>o<\/sup>C:<\/td>\n<td>  10.2  g\/cm<sup>3<\/sup>   <\/td>\n<\/tr>\n<\/table>\n<span class=\"collapseomatic \" id=\"id6a2a1784507c4\"  tabindex=\"0\" title=\"Show more, including: Heats, Energies, Oxidation,&lt;br \/&gt; Reactions, Compounds, Radii, Conductivities\"    >Show more, including: Heats, Energies, Oxidation,<br \/> Reactions, Compounds, Radii, Conductivities<\/span><div id=\"target-id6a2a1784507c4\" class=\"collapseomatic_content \">\n<table class=\"datatop\">\n<tr>\n<td class=\"elemglb\">Atomic volume:<\/td>\n<td>   9.4 cm<sup>3<\/sup>\/mol   <\/td>\n<\/tr>\n<tr>\n<td class=\"elemglb\">Structure:<\/td>\n<td>    bcc: body-centered cubic <\/td>\n<\/tr>\n<tr>\n<td class=\"elemglb\">Hardness: <\/td>\n<td>    5.5  mohs  <\/td>\n<\/tr>\n<tr>\n<td class=\"elemglb\">Specific heat capacity<\/td>\n<td>   0.25  J g<sup>-1<\/sup> K<sup>-1<\/sup>  <\/td>\n<\/tr>\n<tr>\n<td class=\"elemglb\">Heat of fusion<\/td>\n<td>  32.0  kJ mol<sup>-1<\/sup>  <\/td>\n<\/tr>\n<tr>\n<td class=\"elemglb\">Heat of atomization<\/td>\n<td> 659 kJ mol<sup>-1<\/sup> <\/td>\n<\/tr>\n<tr>\n<td class=\"elemglb\">Heat of vaporization<\/td>\n<td>    598  kJ mol<sup>-1<\/sup>    <\/td>\n<\/tr>\n<tr>\n<td class=\"elemglb\">1<sup>st<\/sup> ionization energy<\/td>\n<td>  684.9 kJ mol<sup>-1<\/sup>    <\/td>\n<\/tr>\n<tr>\n<td class=\"elemglb\">2<sup>nd<\/sup> ionization energy<\/td>\n<td>  1588.2  kJ mol<sup>-1<\/sup>    <\/td>\n<\/tr>\n<tr>\n<td class=\"elemglb\">3<sup>rd<\/sup> ionization energy<\/td>\n<td>   2620.5   kJ mol<sup>-1<\/sup>   <\/td>\n<\/tr>\n<tr>\n<td class=\"elemglb\">Electron affinity<\/td>\n<td>   72  kJ mol<sup>-1<\/sup>  <\/td>\n<\/tr>\n<tr>\n<td class=\"elemglb\">Minimum oxidation number<\/td>\n<td>  -2    <\/td>\n<\/tr>\n<tr>\n<td class=\"elemglb\">Min. common oxidation no.<\/td>\n<td>  0  <\/td>\n<\/tr>\n<tr>\n<td class=\"elemglb\"> Maximum oxidation number <\/td>\n<td> 6 <\/td>\n<\/tr>\n<tr>\n<td class=\"elemglb\"> Max. common oxidation no. <\/td>\n<td>  6  <\/td>\n<\/tr>\n<tr>\n<td class=\"elemglb\"> Electronegativity (Pauling Scale) <\/td>\n<td> 1.66   <\/td>\n<\/tr>\n<tr>\n<td class=\"elemglb\"> Polarizability volume <\/td>\n<td>  12.8 &Aring;<sup>3<\/sup> <\/td>\n<\/tr>\n<tr>\n<td class=\"elemglb\"> Reaction with air<\/td>\n<td> w\/ht, &#8658;  MoO<sub>3<\/sub>     <\/td>\n<\/tr>\n<tr>\n<td class=\"elemglb\"> Reaction with 15 M HNO<sub>3<\/sub> <\/td>\n<td>  none  <\/td>\n<\/tr>\n<tr>\n<td class=\"elemglb\"> Reaction with 6 M HCl <\/td>\n<td>  none <\/td>\n<\/tr>\n<tr>\n<td class=\"elemglb\"> Reaction with 6 M NaOH <\/td>\n<td>  &#8211;  <\/td>\n<\/tr>\n<tr>\n<td class=\"elemglb\"> Oxide(s) <\/td>\n<td> MoO<sub>2<\/sub> (brown), MoO<sub>3<\/sub> (white) <\/td>\n<\/tr>\n<tr>\n<td class=\"elemglb\"> Hydride(s) <\/td>\n<td>   &#8211; <\/td>\n<\/tr>\n<tr>\n<td class=\"elemglb\"> Chloride(s) <\/td>\n<td>   MoCl<sub>2<\/sub>, MoCl<sub>3<\/sub>, MoCl<sub>4<\/sub>, MoCl<sub>5<\/sub>, MoCl<sub>6<\/sub> <\/td>\n<\/tr>\n<tr>\n<td class=\"elemglb\">Atomic radius <\/td>\n<td>  139 pm <\/td>\n<\/tr>\n<tr>\n<td class=\"elemglb\">Ionic radius (1+ ion) <\/td>\n<td> &#8211; <\/td>\n<\/tr>\n<tr>\n<td class=\"elemglb\">Ionic radius (2+ ion) <\/td>\n<td>   &#8211;  <\/td>\n<\/tr>\n<tr>\n<td class=\"elemglb\">Ionic radius (3+ ion) <\/td>\n<td>  83  pm <\/td>\n<\/tr>\n<tr>\n<td class=\"elemglb\"> Ionic radius (1- ion) <\/td>\n<td>   &#8211;  <\/td>\n<\/tr>\n<tr>\n<td class=\"elemglb\"> Ionic radius (2- ion) <\/td>\n<td> &#8211; <\/td>\n<\/tr>\n<tr>\n<td class=\"elemglb\"> Ionic radius (3- ion) <\/td>\n<td>   &#8211;  <\/td>\n<\/tr>\n<tr>\n<td class=\"elemglb\"> Thermal conductivity <\/td>\n<td> 138  W m<sup>-1<\/sup> K<sup>-1<\/sup> <\/td>\n<\/tr>\n<tr>\n<td class=\"elemglb\"> Electrical conductivity <\/td>\n<td>  17.3 x 10<sup>6<\/sup> S m<sup>-1<\/sup>  <\/td>\n<\/tr>\n<tr>\n<td class=\"elemglb\">Freezing\/Melting point:<\/td>\n<td> 2623 <sup>o<\/sup>C, 2896 K    <\/td>\n<\/tr>\n<\/table>\n<\/div>\n<\/div>\n<div class=\"leftimagepadding\">\n<div style=\"width: 310px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/chemicool.com\/elements\/images\/300-molybdenum.jpg\" width=\"300\" height=\"160\" alt=\"Molybdenum\" class=\"size-full\" \/><p class=\"wp-caption-text\">Lumps of molybdenum. Photo by Tomihahndorf.<\/p><\/div>\n<\/div>\n<\/div>\n<p><a id=\"discovery\"><\/a><\/p>\n<h2>Discovery of Molybdenum<\/h2>\n<p>Molybdenite, also known as molybdena, is a soft black mineral that was once used to make pencils. The mineral was often confused for graphite and it was thought to contain <a href=\"https:\/\/www.chemicool.com\/elements\/lead.html\">lead<\/a>.  It is now known to be molybdenum disulfide (MoS<sub>2<\/sub>).<\/p>\n<p>In 1778 Swedish scientist Carl W. Scheele proved that molybdenite was not graphite nor did it contain lead. Nitric acid does not react with graphite, while the molybdenite produced sulfuric acid and a white solid &#8211; we now know this was molybdenum oxide or possibly molybdenum oxide hydrate. <sup>(1)<\/sup><\/p>\n<p>Scheele concluded that the mineral contained a new element, but he did not isolate it, because he did not have a suitable furnace to reduce the white solid to the metal.<\/p>\n<p>In 1781, Scheele&#8217;s friend and countryman, Peter J. Hjelm isolated the metal by reducing the white solid with <a href=\"https:\/\/www.chemicool.com\/elements\/carbon.html\">carbon<\/a>.  He ground the two substances together using linseed oil to form a paste &#8211; the paste ensured intimate contact between the carbon and the molybdenite. Hjelm heated the mixture strongly in a closed crucible to produce the new metallic element. <sup>(2)<\/sup> Hjelm called his new metal molybdenum. <\/p>\n<p>The element name comes from the Greek word &#8216;molybdos&#8217; meaning lead. <\/p>\n<div style=\"clear:both;line-height:20px;\">&nbsp;<\/div>\n<div class=\"adsense300\">\n<div class=\"adsense300spacer\">\n<div style=\"line-height: 10px;\"><img decoding=\"async\" src=\"\/\/www.chemicool.com\/ad.png\" alt=\"\" \/><\/div>\n<p><script async src=\"\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js\"><\/script><ins class=\"adsbygoogle\" style=\"display: inline-block; width: 336px; height: 280px;\" data-ad-client=\"ca-pub-9461632227417539\" data-ad-slot=\"2986645201\"><\/ins><script>(adsbygoogle = window.adsbygoogle || []).push({});<\/script><\/p>\n<div class=\"leftimagepadding\">\n<p><strong>Without Molybdenum, Nothing Could Live<\/strong><br \/>\n<div style=\"width: 310px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.chemicool.com\/elements\/images\/300-molybdenum-cycle.jpg\" width=\"300\" height=\"387\" alt=\"Molybdenum Cycle\" class=\"size-full\" \/><p class=\"wp-caption-text\">The molybdenum (Mo) cycle in soil: Molybdenum in the soil is taken up by tree roots and deposited in leaves. These leaves fall to the ground and decompose, releasing molybdenum.  Image credit: <a href=\"http:\/\/www.bnl.gov\/today\/story.asp?ITEM_NO=2123\">Brookhaven National Laboratory<\/a><\/p><\/div>\n<div style=\"width: 310px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.chemicool.com\/elements\/images\/300-molybdenum-copper-sensor.png\" width=\"300\" height=\"288\" alt=\"Molybdenum\/copper sensor\" class=\"size-full\" \/><p class=\"wp-caption-text\">The NIST &#8220;transition-edge sensor&#8221; is made of layers of molybdenum and copper. It is used it X-ray sensors for materials research and astronomy. Image credit: <a href=\"http:\/\/www.nist.gov\/\">NIST<\/a><\/p><\/div>\n<\/div>\n<\/div>\n<\/div>\n<p><a id=\"appear\"><\/a><\/p>\n<h3>Appearance and Characteristics<\/h3>\n<p>\t  <strong>Harmful effects:<\/strong> <\/p>\n<p>\t \tMolybdenum is toxic in all but small quantities.<\/p>\n<p>\t  <strong>Characteristics:<\/strong><\/p>\n<p>\t\t Molybdenum is a silvery-white, high-melting metal.<\/p>\n<p>\t\tIt does not react with <a href=\"https:\/\/www.chemicool.com\/elements\/oxygen.html\">oxygen<\/a> or water at room temperature and it also resists corrosion at ordinary temperatures.<\/p>\n<p>When present in compounds, molybdenum exists mostly in the oxidation state IV and VI.  <\/p>\n<p>Molybdenum is one of the five major refractory metals (metals with very high resistance to heat and wear). <\/p>\n<p><strong>The Five Refractory Metals &#8211; note their close relationship in the periodic table<\/strong>\t  <\/p>\n<table class=\"navbar\">\n<tr>\n<td><a class=\"tmetals\" href=\"https:\/\/www.chemicool.com\/elements\/niobium.html\" title=\"niobium \"><sup>41<\/sup><br \/>Nb<\/a> <\/td>\n<td><a class=\"tmetals\" href=\"https:\/\/www.chemicool.com\/elements\/molybdenum.html\" title=\"molybdenum \"><sup>42<\/sup><br \/>Mo<\/a> <\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td><a class=\"tmetals\" href=\"https:\/\/www.chemicool.com\/elements\/tantalum.html\" title=\"tantalum \"><sup>73<\/sup><br \/>Ta<\/a> <\/td>\n<td><a class=\"tmetals\" href=\"https:\/\/www.chemicool.com\/elements\/tungsten.html\" title=\"tungsten \"><sup>74<\/sup><br \/>W<\/a> <\/td>\n<td><a class=\"tmetals\" href=\"https:\/\/www.chemicool.com\/elements\/rhenium.html\" title=\"rhenium \"><sup>75<\/sup><br \/>Re<\/a> <\/td>\n<\/tr>\n<\/table>\n<div style=\"height:15px;\"><\/div>\n<p>The other refractory metals are <a href=\"https:\/\/www.chemicool.com\/elements\/tungsten.html\">tungsten<\/a>, <a href=\"https:\/\/www.chemicool.com\/elements\/tantalum.html\">tantalum<\/a>, <a href=\"https:\/\/www.chemicool.com\/elements\/rhenium.html\">rhenium<\/a> and <a href=\"https:\/\/www.chemicool.com\/elements\/niobium.html\">niobium<\/a>. <\/p>\n<p>Molybdenum oxide (MoO<sub>3<\/sub>) is soluble in alkaline water, forming molybdate salts.\t<\/p>\n<p><a id=\"uses\"><\/a><\/p>\n<h2>Uses of Molybdenum<\/h2>\n<p>Molybdenum is used in small quantities to harden steel and is used in many alloys.<\/p>\n<p>\t\tMolybdenum&#8217;s strength and resistance to expanding or softening at high temperatures is particularly sought after in critical areas where high temperatures are common, such as in nuclear power plants and aircraft engines.<\/p>\n<p>Molybdenum is used as glass furnace electrodes due to its high melting point.<\/p>\n<p>\t\tIt is also used in the petroleum industry, to catalyze the removal of organic <a href=\"https:\/\/www.chemicool.com\/elements\/sulfur.html\">sulfur<\/a> compounds in coal liquification and gas liquification processes.<\/p>\n<p>\t\tMolybdenum is an essential trace element for animals and plants. As with <a href=\"https:\/\/www.chemicool.com\/elements\/selenium.html\">selenium<\/a>, too much of it is toxic, too little of it is fatal.<\/p>\n<p>\t\tIn nitrogen fixing bacteria, molybdenum is a vital component of the nitrogenase enzyme which allows conversion of <a href=\"https:\/\/www.chemicool.com\/elements\/nitrogen.html\">nitrogen<\/a> gas in air into nitrates vital for plant growth.<\/p>\n<p>\t\tMolybdenum is also present in 20 or so enzymes needed in animals&#8217; metabolisms.  <\/p>\n<p><a id=\"abund\"><\/a><\/p>\n<h2>Abundance and Isotopes<\/h2>\n<p><span class=\"elemgl\">Abundance earth&#8217;s crust:<\/span>   1.2 parts per million by weight,  0.2 parts per million by moles<\/p>\n<p>\t\t<span class=\"elemgl\">Abundance solar system:<\/span> 9 parts per billion by weight, 0.1 part per billion by moles<\/p>\n<p>\t\t\t\t<span class=\"elemgl\">Cost, pure:<\/span>   $44 per 100g<\/p>\n<p>\t\t\t\t<span class=\"elemgl\">Cost, bulk:<\/span>  $ per 100g<\/p>\n<p>\t\t<span class=\"elemgl\">Source:<\/span> Molybdenum metal is not found free in nature. The main ore of molybdenum is molybdenite, (molybdenum disulfide, MoS<sub>2<\/sub>). It also occurs in wulfenite (lead molybdate) and powellite (<a href=\"https:\/\/www.chemicool.com\/elements\/calcium.html\">calcium<\/a> molybdate). Commercially, the metal is obtained by mining molybdenite directly and it is also recovered as a by-product of <a href=\"https:\/\/www.chemicool.com\/elements\/cobalt.html\">copper<\/a> mining.<\/p>\n<p>\t\t<span class=\"elemgl\">Isotopes:<\/span> Molybdenum has 24 isotopes whose half-lives are known with mass numbers from 86 to 110. Naturally occurring molybdenum is a mixture of seven isotopes and they are found in the percentages shown: <sup>92<\/sup>Mo (14.8%), <sup>94<\/sup>Mo (9.2%), <sup>95<\/sup>Mo (15.9%), <sup>96<\/sup>Mo (16.7%), <sup>97<\/sup>Mo (9.6%), <sup>98<\/sup>Mo (24.1%) and <sup>100<\/sup>Mo (9.6%). The most naturally abundant is <sup>98<\/sup>Mo at 24.1%.<\/p>\n<div style=\"max-width: 750px;\">\n<div style=\"line-height: 10px;\"><img decoding=\"async\" src=\"\/\/www.chemicool.com\/ad.png\" alt=\"\" \/><\/div>\n<p><script async src=\"\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js\"><\/script><ins class=\"adsbygoogle\" style=\"display: block;\" data-ad-client=\"ca-pub-9461632227417539\" data-ad-slot=\"8753977201\" data-ad-format=\"auto\"><\/ins><script>(adsbygoogle = window.adsbygoogle || []).push({});<\/script><\/p>\n<\/div>\n<p><a id=\"refer\"><\/a><\/p>\n<h4>References<\/h4>\n<ol>\n<li>Mary Eagleson, Concise Encyclopedia Chemistry., Walter de Gruyter., 1994., p662. <\/li>\n<li>Mary Elvira Weeks, The Discovery of the Elements V., Journal of Chemical Education., March 1932., p 462. <\/li>\n<\/ol>\n<h4>Cite this Page<\/h4>\n<p>For online linking, please copy and paste one of the following:<\/p>\n<pre class='code'>\r\n&lt;a href=\"https:\/\/www.chemicool.com\/elements\/molybdenum.html\"&gt;Molybdenum&lt;\/a&gt;\r\n<\/pre>\n<p>or<\/p>\n<pre class='code'>\r\n&lt;a href=\"https:\/\/www.chemicool.com\/elements\/molybdenum.html\"&gt;Molybdenum Element Facts&lt;\/a&gt;\r\n<\/pre>\n<p>To cite this page in an academic document, please use the following MLA compliant citation:<\/p>\n<pre class='code'>\r\n\"Molybdenum.\" Chemicool Periodic Table. Chemicool.com. 17 Oct. 2012. Web. <script type=\"text\/javascript\">\r\n<!--\r\nvar currentTime = new Date()\r\nvar month = currentTime.getMonth() + 1\r\nvar day = currentTime.getDate()\r\nvar year = currentTime.getFullYear()\r\ndocument.write(month + \"\/\" + day + \"\/\" + year)\r\n\/\/-->\r\n<\/script> \r\n&lt;https:\/\/www.chemicool.com\/elements\/molybdenum.html&gt;.<\/pre>\n","protected":false},"excerpt":{"rendered":"<p>Data Zone | Discovery | Facts | Appearance &amp; Characteristics | Uses | Abundance &amp; Isotopes | References 42 Mo 95.94 The chemical element molybdenum is classed as a transition metal. It was discovered in 1778 by Carl W. Scheele. Data Zone Classification: Molybdenum is a transition metal Color: silvery-white Atomic weight: 95.94 State: solid [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_genesis_hide_title":false,"_genesis_hide_breadcrumbs":false,"_genesis_hide_singular_image":false,"_genesis_hide_footer_widgets":false,"_genesis_custom_body_class":"","_genesis_custom_post_class":"","_genesis_layout":"","footnotes":""},"class_list":{"0":"post-370","1":"page","2":"type-page","3":"status-publish","5":"entry"},"_links":{"self":[{"href":"https:\/\/www.chemicool.com\/elements\/wp-json\/wp\/v2\/pages\/370","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.chemicool.com\/elements\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.chemicool.com\/elements\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.chemicool.com\/elements\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/www.chemicool.com\/elements\/wp-json\/wp\/v2\/comments?post=370"}],"version-history":[{"count":28,"href":"https:\/\/www.chemicool.com\/elements\/wp-json\/wp\/v2\/pages\/370\/revisions"}],"predecessor-version":[{"id":4267,"href":"https:\/\/www.chemicool.com\/elements\/wp-json\/wp\/v2\/pages\/370\/revisions\/4267"}],"wp:attachment":[{"href":"https:\/\/www.chemicool.com\/elements\/wp-json\/wp\/v2\/media?parent=370"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}