An atom is 1._________ in shape. It has three subatomic particles namely, the electrons,protons,and neutrons. A proton possesses 2.________ changer. On the other hand, an electron is 3.________ charged while neutrons is said to be 4._______. The lightest among the subatomic particles is the 5.________ while the heaviest is the 6.___________. Electrons can be found 7.__________ the nucleus while the protons and neutrons can be found 8.____________ in the nucleus. The nucleus is the 9.__________ part of the atom. The charge of the nucleus is 10._________.