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Question


The pair of elements having same number of valence electrons are _________.



A
Zn,Mg
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B
Cl,I
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C
Na,Ca
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D
C,Ge
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Solution

The correct options are
A $$Zn, Mg$$
B $$C, Ge$$
C $$Cl, I$$
(A) Zn - 2, 8, 18, 2
      Mg - 2, 8, 2
(B) Cl - 2, 8, 7
      I - 2, 8, 18, 18, 7
(C) Na - 2, 8, 1
      Ca - 2, 8, 8, 2
(D) C - 2, 4
      Ge - 2, 8, 18, 4
In the above choices A, B, D pair of the element have the same number of valence electrons.

Chemistry

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