Total Potential Energy

Chlorine and bromine are in the same group in the periodic table. The bond energy of a Cl-Cl bond is 240 KJ/mol. The bond energy of a Br-Br bond is 190 KJ/mol. Which statement best explains this difference?

Bromine has more electron levels than chlorine

Use the information in the table to answer the question. Which molecule has the greatest bond energy?

CH4

The chemical potential energy of bond A is greater than the chemical potential energy of bond B. Which statement best explains this observation?

The atoms in bond A are held more tightly together than the atoms in bond B

The balanced equations for two reactions are shown. Which statement best explains why reaction 1 requires a greater input of energy than reaction 2?

The bond energy of the reactants in reaction 1 is greater than the bond energy of the reactants in reaction 2

Which statement about the bond energies of nitrogen, iodine, and fluorine gases is correct?

The bond in nitrogen gas is the most difficult to break