Question

Calcium is an element with atomic number 20 is it a metal or nonmetal?

Answer 1

Definition: Metals are substances that have a tendency to lose electrons, For example, sodium, potassium, calcium, etc.

• Calcium is an element whose atomic number is 20.
• It has electronic configuration 2,8,8,2, therefore it has 2 electrons in its last shell or outermost shell, hence it has the tendency to lose its 2 loosely bound electrons.
• Therefore, calcium is a metal.