Discover the initiatives of Rabbi Aaron Steinig to enhance Jewish education for special needs students facing unique ...

We independently review everything we recommend. When you buy through our links, we may earn a commission. Learn more› By Annie Chou Annie Chou is a writer covering home office, cameras, and games.

For example, the atomic number of sodium is 11. Every sodium atom has 11 protons and 11 electrons. It has 11 positive charges and 11 negative charges. The mass number of an atom is its total number of ...