Asked in
Elements and Compounds

An element has an atomic number of 20 and a mass of sub atomic particles are present an atom of this element. What is it?


User Avatar
Wiki User
October 11, 2008 8:30PM

Calcium has an atomic number of 20 which means an atom of calcium has 20 protons and 20 electrons and a variable number of neutrons depending upon which isotope of Calcium it is.