How to find the valency of barium using the K,L,M,N shells?
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Barium's atomic number is 56.
So, structure of shell is :
K shell : 2
L shell : 8
M shell : 18
N shell : 18
O shell :8
P shell : 2
So, structure of shell is :
K shell : 2
L shell : 8
M shell : 18
N shell : 18
O shell :8
P shell : 2
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