# Element that corresponds to atomic number 18?

Feb 2, 2018

Argon

#### Explanation:

Atomic number is the top number on the periodic table

Feb 3, 2018

Argon $\left(A r\right)$

#### Explanation:

Have a look at the periodic table. Then, look at the top number of each element, and that is the atomic number. When you reach element number $18$ on the periodic table, there should be an element with a symbol $A r$, and it denotes the element argon.

Argon is an unreactive noble gas.