Question

Which one of the following metals is the most reactive and stored in kerosene?
(a) Iron
(b) Gold
(c) Copper
(d) Potassium​

Answer 1

Answer:

d) Potassium(K)

Explanation:

K is more reactive than Na and Li because K is bigger than those other elements. So outermost electron is farther away from nucleus. Hence the ionization energy in K is less than that in Na or Li.

Answer 2

Answer:

Pottasium is the most reactive metal and stored in kerosene