Unlike the elements in groups 1A and 2A, those in group 3A do not show a smooth decrease in first ionization energy in going down the column. Explain the irregularities.

the increase of protons   hope this

answer: value for at is 1.61\times 10^{9}.

solution:

given:

since, hcn is an acid , as it gives hydronium ion in its solution.

for hcn

is a base which accepts of hydronium ions.

as the reaction has reversed the k' of the new reaction will be inverse of k of previous reaction.

since   is acting as a base so the value of will be :