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Test Index
JEE Main Chemistry Class 11 Classification of Elements and Periodicity in Properties 2 Questions
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Question : 1
Total: 36
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
[4 Apr 2024 Shift 1]
7
5
6
3
Validate
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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