# What is the number of protons in the nucleus referred to as?

Jun 13, 2018

#### Explanation:

The number of protons in an element is also called the element's proton or atomic number. Each element has a different atomic number. Thus, changing the number of protons in a nucleus changes the element as well.

The periodic table has got $118$ elements discovered so far, and you should always have one or be given one for your chemistry class.