Question #79047
1 Answer
Nov 5, 2015
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.
