what do u mean by ionisation 'potential', 'electronegativity'&affinity'?

Question

I AM CONFUSED IN IT CAN U HELP ME?

Answer 1

ionisation is the energy needed to remove 1 mole of electrons from 1 mole of gaseous atoms.

electronegativity is a measure of how strongly an atom attracts electrons i.e. the affinity that atom has for electrons of another atom when forming bonds

Answer 2

Ionisation potential is that energy used to remove an electron from the valance shell of an isolated gaseous atom.

Electronaffinity is that energy liberated when an electron is induced into the valance shell of an isolated gaseous atom.

Electronegativity is measure of ability of an atom to attract electrons.