Question

1pt which of the following four choices best describes the octet rule?

a. elements will typically react if they have less than eight electrons in their valence shell.
b. elements always have eight electrons in their valence shell.
c. orbitals fill one electron at a time.
d. no more than two electrons can share an orbital.

Explanation:

The octet rule states that atoms tend to combine in such a way that they each have eight electrons in their valence shell, giving them the same electron - configuration as a noble gas. Elements typically react to achieve a full octet (8 electrons) in their valence shell if they don't already have it. Option B is incorrect because not all elements start with 8 valence electrons. Option C describes the Hund's rule. Option D describes the Pauli - exclusion principle.

Answer:

A. Elements will typically react if they have less than eight electrons in their valence shell.