A Stable Atom Has ________ in Its Valence Shell

Question

A stable atom has ________ in its valence shell.
A) 4 electrons
B) 2 neutrons
C) 8 electrons
D) 8 protons
E) 10 electrons

Accepted Answer

A stable atom has a full valence shell with 8 electrons, except for hydrogen and helium, which have 2 electrons in their valence shells. This is known as the octet rule, which states that atoms tend to gain, lose, or share electrons in order to achieve a full valence shell of 8 electrons.