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WBJEE 2019 Chemistry Solved Paper
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© examsnet.com
Question : 1
Total: 40
The H–N–H angle in ammonia is 107.6º, while the H–P–H angle in phosphine is 93.5º. Relative to phosphine, the p-character of the lone pair on ammonia is expected to be
Less
More
Same
Cannot be predicted
Validate
Solution:
(A)
s-character increases, Bond angle increases
p-character increases, Bond angel decreases
Hence, p-character order : P
H
3
> :N
H
3
Bond angle order P
H
3
< :N
H
3
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