JEE Mains · Chemistry · STD 11 - 3. Classification of elements and periodicity in properties
Number of elements from the following that \(CANNOT\) form compounds with valencies which match with their respective group valencies is _______. \(B, C, N, S, O, F, P, Al, Si\)
- A \(7\)
- B \(5\)
- C \(6\)
- D \(3\)
Answer & Solution
Correct Answer
(D) \(3\)
Step-by-step Solution
Detailed explanation
\(\mathrm{N}, \mathrm{O}, \mathrm{F}\) can't extend their valencies upto their group number due to the non-availability of vacant \(2\)d like orbital.
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