Comments for Chemicool

Comment on Krypton Element Facts by Doug Stewart

Doug Stewart — Mon, 19 Nov 2012 20:12:52 +0000

Hi Nancy, to get the mass number, we add the number of protons and neutrons.

Krypton’s most abundant isotope has 48 neutrons, so its mass number is 36 + 48 = 84.

The next most abundant isotope is krypton-86, which has 50 neutrons and a mass number of 86.

Doug Stewart — Mon, 19 Nov 2012 14:19:59 +0000

It’s the nitrogen family, also known as group 15 of the periodic table.

Doug Stewart — Mon, 19 Nov 2012 14:18:28 +0000

Hi Darren, it’s -210.1 oC, 63.05 K. (It’s the same as the melting point.)

Bob l — Mon, 19 Nov 2012 12:56:10 +0000

This page really helped, Im doing a school project.

Markus Lang — Sun, 18 Nov 2012 19:44:01 +0000

Yes that´s right but most of the pencils that are sold contain a quite high amount of clay so it´s not “pure” graphite.

nancy d — Sun, 18 Nov 2012 15:37:45 +0000

I love this website but what is kryptons mass number

Raghu — Sun, 18 Nov 2012 14:38:40 +0000

How to convert Manganese Carbonate to Mn3O4 commercially ?

vinod — Sun, 18 Nov 2012 08:39:35 +0000

Thanks its a great website,i got my information which I required in my general practice.thanks once again.

Darrin Emery — Sat, 17 Nov 2012 20:58:43 +0000

follow up question. what is nitrogen’s family?

Darrin Emery — Sat, 17 Nov 2012 20:45:12 +0000

What is the freezing point of nitrogen? i can seem to find it any were. help!