Question

patterns of properties quick check
which feature defines a neutral atom? (1 point)
the number of electrons equal to the number of protons
a low level of reactivity
a full outer electron shell
the ability to change to another substance during a chemical reaction

Explanation:

A neutral atom has no overall electrical charge. Protons are positively - charged, electrons are negatively - charged. When the number of electrons equals the number of protons, their charges cancel out, resulting in a neutral atom. Reactivity, full outer electron shells, and ability to change in a chemical reaction do not define neutrality.

Answer:

the number of electrons equal to the number of protons