Question

Valencies of 1 to 40 elements

Answer 1

H - 1
He - 2
Li - 1
Be - 2
B - 3
C - +4, -4
N - -3
O - -2
F - 1
Ne - 0
Na - 1
Mg - 2
Al - 3
Si - 4
P - 5
S - 6
Cl - +1, -1
Ar - 0
K - 1
Ca - 2
Sc - 3
Ti - 4
V - 5,4,3,2
Cr - 6,3,2
Mn - 2,3
Fe - 2,3
Co - 2,3
Ni - 2,3
Cu - 2
Zn - 2
Ga - 3
Ge - 4
As - +3,-3,5
Se - 6,4,2
Br - 5
Kr - 0
Rb - 1
Sr - 2
Y - 3
Zr - 4

Answer 2

Explanation:

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