no. of neutrons in first 30 elements
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Asked by Ravinder Ghanghas
Mar 9, 2014
periodic table 1 to 30 plz give me with atmoic no. mass valency neutron proton and electronic configrution
periodic table 1 to 30 plz give me with atmoic no. mass valency neutron proton and electronic configrution
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Ravinder Ghanghas
sir these are given in book i want 21 to 30
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Satyanarayana Prasad
Member since Apr 24, 2013
Ans:Following table givern about forst 20 elemlents
Atomic number Element Atomic mass Valency Protons Neutrons
1 Hydrogen 1 1 1 0
2 Helium 4 0 2 2
3 Lithium 7 1 3 4
4 Beryllium 9 2 4 5
5 Boron 11 3 5 6
6 Carbon 12 4 6 6
7 Nitrogen 14 3 7 7
8 Oxygen 16 2 8 8
9 Fluorine 19 1 9 10
10 Neon 20 0 10 10
11 Sodium 23 1 11 12
12 Magnesium 24 2 12 12
13 Aluminium 27 3 13 14
14 Silicon 28 4 14 14
15 Phosphorous 31 5,3 15 16
16 Sulphur 32 2 16 16
17 Chlorine 35 1 17 18
18 Argon 40 0 18 22
19 Potassium 39 1 19 20
20 Calcium 40 2 20