MCQ
The maximum valency of an element with atomic number $7$ is
  • A
    $2$
  • $5$
  • C
    $4$
  • D
    $3$

Answer

Correct option: B.
$5$
b
(b) Valency is according to valence shall configuration which here is $1{s^2},2{s^2},2{p^3},\,\,ie.\,5$

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