In a covalent bond:

a. An atom gains one or more electrons from another atom to gain stability.
b. Adjacent atoms share a single electron.
c. An atom loses electrons to another to gain stability.
d. Atoms share one or more pairs of electrons.

The correct answer is d. Atoms share one or more pairs of electrons.

Explanation:

In a covalent bond, electrons of the last energy level are shared, to reach the octet (except for the Hydrogen that reaches its stability with 2 electrons). This type of bond occurs between two nonmetallic compounds. Example: H202 (hydrogen peroxide) formed between oxygen and hydrogen.

frequency, z, and the collision density, z, in carbon dioxide (co2), r 180 pm at 30 °c and 120 kpa

in the analysis of systems that involve fluid flow, we frequently encounter the combination of properties u and pv.