Would you expect the nonbonding electron-pair domain in nh3 to be greater or less in size than for the corresponding one in ph3?

* greater

* lesser

Less

Explanation:

a. energy is absorbed in the reaction.

if in a given reaction the energy of products is greater than the energy of reactants it means that reaction is endothermic and during the reaction, the energy is absorbed by reactants. in an endothermic reaction, the products have more stored chemical energy than the reactants. and in this reaction the reactants are more stable than products before the compounds with less energy are always more stable.

it is b that is the answer.