What is the total number of valence electrons in a germanium atom in the ground state? (1) 22 (3) 32(2) 2 (4) 4

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.