As a result of the transfer of an electron from a less electronegative atom to a more electronegative atom,
a. the more electronegative atom is oxidized, and energy is released.
b. the more electronegative atom is reduced, and energy is consumed.
c. the more electronegative atom is oxidized, and energy is consumed.
d. the more electronegative atom is reduced, and energy is released.

The correct answer is Option d.

Explanation:

Electronegativity is defined as the tendency of an element to attract the shared pair of electron towards itself in a compound.

When electron is transferred from less electronegative atom to more electronegative atom.

The atom which is more electronegative gains electron and undergoes reduction reaction.

Reduction reaction is defined as the reaction in which an atom gains electrons. The oxidation number of the atom gets reduced during this reaction.

During the transfer of electrons, energy is released when an electron looses is potential energy during the transfer.

Hence, the correct answer is Option d.

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the answer is c.the valence of the atoms combine .