Question

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

Explanation:

A neutral atom has no overall electrical charge. Protons are positively - charged and electrons are negatively - charged. When the number of electrons equals the number of protons, the positive and negative charges cancel out, resulting in a neutral atom. A full outer electron shell relates to stability, a low level of reactivity is a consequence of stability in some cases, and the ability to change in a chemical reaction is a general property of atoms in reactions, but none of these define neutrality.

Answer:

the number of electrons equal to the number of protons