Question

For each of the following series of compounds, arrange the molecules in order of decreasing basicity (most basic to least basic): NH4 :NH, INH₂​

Answer 1

NH TO NH4+ to INH^2 is correct

Answer 2

Step-by-step explanation:

The basicity of a compound depends on its ability to donate a pair of electrons to an acid. The more easily a compound can donate electrons, the stronger the base it is. Based on this, we can order the compounds NH4+, NH, and INH₂ in terms of decreasing basicity as follows:

NH > NH4+ > INH₂

Here's why:

NH is the most basic of the three compounds because it has a lone pair of electrons on the nitrogen atom that is not shared with any other atoms. This makes it a very good electron donor, and therefore a strong base.

NH4+ is the next most basic compound because it is a positively charged ion, meaning it has lost one of its electrons. As a result, it is not as good at donating electrons as NH, but it is still a stronger base than INH₂.

INH₂ is the least basic of the three compounds because it has two electron-withdrawing groups (the Iodine atoms) attached to the nitrogen atom. These groups decrease the electron density around the nitrogen atom, making it less able to donate electrons and therefore a weaker base than NH4+ and NH.