Chemistry Examples

$A r$

Step 1

Find the element $Ar$ on the periodic table.

18	Atomic Number
Ar	Element Symbol
Argon	Element Name
39.95	Average Atomic Mass

Step 2

To find the number of electrons in $argon$ , first locate the element on the periodic table. Next, find the atomic number which is located above the element's symbol. Since $argon$ 's atomic number is $18$ , $Ar$ has $18$ electrons.

$18$ electrons