Which of the following statements is true?
A)Bond dissociation energies increase down a column of the periodic table.
B)When DH° is positive,more energy is released in forming bonds than is needed to break bonds.
C)When DH° is negative,more energy is needed to break bonds than is released in forming bonds.
D)Bond dissociation energies decrease down a column of the periodic table.

Question

Quizplus · Accepted Answer

Bond dissociation energies generally decrease down a column of the periodic table because atoms get larger and the valence electrons are farther from the nucleus, making the bonds easier to break.

Which of the Following Statements Is True