Question #79047

1 Answer
Nov 5, 2015

Answer:

Elemental calcium and argon are neutral.

Explanation:

Neutral atoms have equal number of protons and electrons. The number of protons in the atom of an element is its atomic number.

A neutral calcium atom has 20 protons (atomic number) and 20 electrons.

A neutral argon atom has 18 protons and 18 electrons.