Atomic structure

1. All elements are composed of.................

2. How many electrons are in an atom of carbon (C)? (Remember : Atomic Number = no. of Protons or no. of Electrons)

3- How many neutrons are in an atom of sodium (Na)? (Remember : Neutrons no. = Mass no. - Atomic no. )

Unlock this slideshow and over 4 million more with Baamboozle+