Chemistry Examples

$P m$

Step 1

Find the element $Pm$ on the periodic table.

61	Atomic Number
Pm	Element Symbol
Promethium	Element Name
145	Average Atomic Mass

Step 2

To find the number of protons in $promethium$ , first locate the element on the periodic table. Next, find the atomic number which is located above the element's symbol. Since $promethium$ 's atomic number is $61$ , $Pm$ has $61$ protons.

$61$ protons