Two or More Atoms Joined Together Through the Sharing of Electrons

Question

Two or more atoms joined together through the sharing of electrons are called an)
A) atomic unit.
B) molecule.
C) compound.
D) isotope.
E) ion.

Accepted Answer

The definition provided is exactly what a molecule is: a group of two or more atoms held together by covalent bonds (shared electrons). Choice C is incorrect because a compound is a substance composed of two or more different elements chemically bonded together, not just any two or more atoms joined together. Choice A is not a common scientific term. Choice D is incorrect because isotopes are atoms of the same element with different numbers of neutrons. Choice E is incorrect because ions are atoms that have gained or lost electrons, resulting in a net electrical charge.