Atoms of which element have two protons and two electrons?

1 Answer
anor277
Jan 9, 2017

If the atom has #"2 nucular protons"#, the atom is ...........

Explanation:

If the atom has #"2 nucular protons"#, the atom is #"helium."#

The identity of the atom is determined by its atomic number, #Z#, which is equal to the number of massive, positively charged particles, #"protons"#, that its nucleus contains. #Z=1#, the atom is #"hydrogen"#; #Z=2#, the atom is #"HELIUM"#; #Z=3#, the atom is #"lithium"#;...................

You should have access to Periodic Table. It will tell you the atomic number, and the atomic mass, for all the elements............

Related questions
See all questions in Elements
Impact of this question
10428 views around the world
You can reuse this answer
Creative Commons License