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
Select the correct option:
A
7
B
5
C
6
D
3
✓ Correct! Well done.
✗ Incorrect. Try again or view the solution.
Solution
N,O, F can't extend their valencies upto their group number due to the non-availability of vacant 2d like orbital.
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