Question

why more back bonding is present in trisilyl amine than NCl3​

Answer 1

Answer:

Properties for back bonding:

For back bonding one atom must have lone pair and another atom must aslo have vacant orbital in its valence shell.

In p-block compoud, for back bonding one atom must belongs to the second period and another atom also belongs to second or third period for effective backing.

=> So, In NCl3 , nitrogen has a lone pair and belongs to a second period and chlorine has also a vacant orbital and belongs to a third period, therefore back bonding is possible in NCl3

But, in NF3, fluorine does not have vacant orbital in its valence shell, therefore back bonding is not possible in NF3.

Explanation:

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