Question

Which is the strongest lewis base nh3 or n(sih3)3?

Answer 1

Lone pair of electrons on N in N(SiH3)3 are used up in p-pie d-pie back bonding while in N(CH3)3 such back bonding is not possible due to the absence of vacant d-orbital in carbon. Therefore, N(CH3)3 is more basic than N(SiH3)3.

Answer 2

Answer:

$NH_{3}$ is a stronger Lewis Base.

Explanation:

• In the Lewis theory of acid-base reactions, a base provides an electron pair and an acid acquires an electron pair.
• Lewis bases are B. OH ions that can provide a pair of unbonded electrons. Therefore, Lewis bases are electron-pair donors.
• Lewis base is defined as an electron donor.
• Nitrogen is minimal and is the easiest to provide a lone pair of electrons. Hence, that makes $NH_{3}$  the stronger lewis base here.

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