Question

which of the following is a neutral atom with 9 electrons? *
fluorine
sodium
beryllium
neon

Explanation:

In a neutral atom, the number of electrons is equal to the atomic number. Fluorine has an atomic number of 9, meaning a neutral fluorine atom has 9 electrons. Sodium has an atomic number of 11, beryllium has an atomic number of 4, and neon has an atomic number of 10.

Answer:

A. Fluorine