Which of the following outer electron configurations would you expect to belong to a reactive metal?

a. ns2

b. ns2 np6

c. ns2 np5

d. ns2 np2

The answer to your question is: a

Explanation:

Electron configurations are:

ns is for alkali metals and alkali earth metal

nd is for transition metals

nf is for Inner transition metals

np is for nonmetals

np⁶ is for noble gases

a. ns2 This is the electron configuration of an alkali earth metal

b. ns2 np6 This is the electron configuration of a noble gas

c. ns2 np5 This is the electron configuration of nonmetals

d. ns2 np2 This is the electron configuration of nonmetals