What is orbitals in the chemistry definition

Orbitals or otherwise fully known as Atomic orbitals are regions of space around the nucleus of an atom. This is also where an electron believed to be found.  The atomic orbitals allow atoms to make covalent bonds.

Hope I could help! :)

because u need two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons in their nuclei to form isotopes.

so since they all have the same shape? i mean maybe because m& m and reeses are both chocolates