A, B and C are three metals with atomic numbe | vedclass

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Question

(B) The electronic configuration of metal $A$ (atomic number $4$) is $2, 2$. Its valency is $2$.The electronic configuration of metal $B$ (atomic numb

Vedclass · Accepted Answer

$B < A < C$

Vedclass · Answer

(B) The electronic configuration of metal $A$ (atomic number $4$) is $2, 2$. Its valency is $2$.The electronic configuration of metal $B$ (atomic number $11$) is $2, 8, 1$. Its valency is $1$.The electronic configuration of metal $C$ (atomic number $13$) is $2, 8, 3$. Its valency is $3$.Comparing the valencies: $B (1) Therefore,the increasing order of their valency is $B < A < C$.

$A, B$ and $C$ are three metals with atomic numbers $4, 11$ and $13$ respectively. Arrange the metals in the increasing order of their valency.

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