2 is this element's atomic number
Answer Helium
Why did helium get the atomic number 2? Because it has two protons in its nucleus. Bet you didn't realize how simple chemistry is!
Last updated 5 years ago · 0 views · SOURCE
Why did helium get the atomic number 2? Because it has two protons in its nucleus. Bet you didn't realize how simple chemistry is!
Last updated 5 years ago · 0 views · SOURCE
-thumb.jpg)
