Teaching BPSC 4.0 बिहार उच्च माध्यमिक शिक्षक भर्ती (PGT) Mock Test Chemical Sciences Chemical Bonding

The structure of N(CH3)3 and N (SiH3)3 are respectively 

1
trigonal planar and pyramidal
2
pyramidal and trigonal planar
3
both pyramidal
4
More than one of the above
5
None of the above
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