Chemistry Examples

$I r$

Step 1

Find the element $Ir$ on the periodic table.

77	Atomic Number
Ir	Element Symbol
Iridium	Element Name
192.22	Average Atomic Mass

Step 2

To find the number of protons in $iridium$ , first locate the element on the periodic table. Next, find the atomic number which is located above the element's symbol. Since $iridium$ 's atomic number is $77$ , $Ir$ has $77$ protons.

$77$ protons