Element Atomic atomic atomic number of number number of name symbol number mass protons of neutrons electrons 1

Physics Sep 19, 2020

Element Atomic atomic atomic number of number number of
name symbol number mass protons of neutrons electrons
1. He
2.krypton
3. 82
4. 31
5. 35
6. 28
7. Gd
8.Palladium
9. 50.942
10.Beryllium
11. 22
12. 50
13. Ag
14.Yttrium
15. 89
16.Neon-18
17.Oxygen-15
18.Nitrogen-15
19.Carbon-15

Expert Solution

please see the attached file.

Atomic Mass = # Protons + # Neutrons
Atomic number = # Protons = # Electrons

References:
http://environmentalchemistry.com/yogi/periodic/atom_anatomy.html
http://www.webelements.com/

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Vincent.

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