[Sylvia Goade]

If an atom consists of 2 protons, 3 neutrons and 2 electrons, what is it?

Helium
Boron
Nitrogen
Lithium

which one?

[Arkcon]

OK, try to pull it together based on the information you've been given.  Would it make sense if the number of protons and electrons were different?  So maybe you can discount that info.  What info can you use to determine atomic number?  And what can you use to determine atomic mass.  And is there a reference form you can use those numbers with?  You may have come across one of those ... periodically.

*[EDIT] my late night spelling and grammar suck*

[rosa]

The atom is Helium. The atomic number of an atom gives the atom it's identity.The atomic number is equal to the number of protons.

[Babcock_Hall]

rosa, Pardon me for saying so, but it is a forum rule that people have to show their attempt to solve a problem before we help them.