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Pls help me to get answer to this question of nitrogen family

Pls help me to get answer to this question of nitrogen family 

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1 Answers

Apurva Sharma
220 Points
5 years ago
The correct answer is (b) 
Atq the reaction is :
3Ca(OH)2 + 6H2O + P4 ----> 3Ca(H2PO2)2 + 2PH3
 
The bond angle in PH3 is much less than NH3
And ammonia is more basic than PH3
 
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