The answer is actually (A.) Trans-radiation
Answer:
There are 11 protons in a sodium atom but only 3 in a lithium atom, so the nuclear charge is much greater. ... The only factor left is the extra distance between the outer electron and the nucleus in sodium's case. That lowers the ionization energy.
What does botanist study?


Ionic bond
Na+ has a POSITIVE charge
while Cl- has a NEGATIVE one.
Through ionic bond both form NACL (Salt).