The greatest concentration of nitrogen on the planet earth is found in

Nitrogen is one of the most fundamental and vital source of energy on the planet Earth, as there are a number of places where the element is found in fractional forms. The atmosphere when analyzed by the research workers and other professional was attributed to have about 3/4th of nitrogen molecules inside its basic composition.As the density of nitrogen is more in air or we can say in the atmosphere then any where else on planet Earth.

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.