Enter a problem...
Chemistry Examples
Step 1
Find the element on the periodic table.
55 | Atomic Number |
Cs | Element Symbol |
Cesium | Element Name |
132.905 | Average Atomic Mass |
Step 2
To find the number of protons in , first locate the element on the periodic table. Next, find the atomic number which is located above the element's symbol. Since 's atomic number is , has protons.
protons