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STD 11 - 3. Classification of elements and periodicity in properties — JEE STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceJEESTD 11 - 3. Classification of elements and periodicity in properties4 Marks
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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