7.2 describe the structure of an atom in terms of protons, neutrons and electrons and use symbols such as (14/6)C to describe particular nuclei

7.2 describe the structure of an atom in terms of protons, neutrons and electrons and use symbols such as (14/6)C to describe particular nuclei

An atom is a tiny particle with nucleus in the centre and electrons orbiting it. A nucleus is made up of proton and neutron.

An atom is presented in this way = ^Y_XZ
Z=Symbol of the atom
X=Mass Number
Y=Atomic Number