Archive: 7 posts

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Does anyone know the atomic Mass of dysprosium and the number of protons in Neptunium? I can't find it anywhere in my notes and its very important! Help : Can't find on the internet!!! Sorry, i know this is an extremely random question :

2009-12-15 01:45:00 Author: Dan930930 Posts: 77

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As I recall, that information is generally written on the periodic table.

2009-12-15 01:46:00 Author: Gilgamesh Posts: 2536

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I just did a quick internet search. My husband would probably know it off the top of his head, he's a science geek. Dysprosium ? Atomic Mass: 162.50 Name: Neptunium Symbol: Np Atomic Number: 93 Atomic Mass: (237.0) amu Melting Point: 640.0 ?C (913.15 K, 1184.0 ?F) Boiling Point: 3902.0 ?C (4175.15 K, 7055.6 ?F) Number of Protons/Electrons: 93 Number of Neutrons: 144 Classification: Rare Earth Crystal Structure: Orthorhombic Density @ 293 K: 20.

2009-12-15 01:46:00 Author: xkappax Posts: 2569

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number of protons in Neptunium 93 Oops too late

2009-12-15 01:48:00 Author: thefrozenpenquin Posts: 479

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If you have any further questions on elements, searching for "periodic table" turned up this site, which seems to be a wealth of information : http://www.webelements.com/

2009-12-15 01:53:00 Author: Gilgamesh Posts: 2536

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Thanks, i tried but i could only find "Junior Editions" lol. Thanks everyone!

2009-12-15 02:02:00 Author: Dan930930 Posts: 77

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If you have any further questions on elements, searching for "periodic table" turned up this site, which seems to be a wealth of information : http://www.webelements.com/ Wow! Can't believe i couldn't find this! Thanks so much! Now i'll never have to ask extremely random element questions!

2009-12-15 02:05:00 Author: Dan930930 Posts: 77

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