Question

Ammonia has greater affinity for proton than phosphine explain

Answer 1

Ammonia that is NH3 has greater affinity for protons than phosphinethat is PH3. Reason: Nitrogen atomhas the smallest size in the hydrides of group 15. ... Moving on to the phosphorus atom which hasbigger size, the electron density is dispersed, thus have low affinity for protons.

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Answer 2

Ammonia that is NH3 has greater affinity for protons than phosphine that is PH3.
Reason: Nitrogen atom has the smallest size in the hydrides of group 15. Therefore, the lone pair is concentrated on a small region and electron density on it is maximum. Consequently this electron density attracts the protons with greater strength. Moving on to the phosphorus atom which has bigger size, the electron density is dispersed, thus have low affinity for protons.


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