Niels Bohr disagreed with Rutherford on the fact that all electrons are distanced equally from the nucleus, but they move on a three-dimensional region around the nucleus. Which term describes the three-dimensional region around a nucleus where an electron may be found?

Planet path
Nuclear orbit
Proton ring
Energy shell

answer: enthalpy

explanation:

for a exothermic reaction, the energy is released i.e. the energy of the products is lower than the energy of the reactants.

= enthaply

= energy of products

= energy of reactants

as , thus comes out to be negative. negative value of enthalpy shows that the reaction is exothermic.

points

explanation: