Question

Element X forms a diatomic molecule. An atom of X requires one electron to form a stable X^-1 ion. What can be deduced about X?
a) It is a grp 1 metal
b)It is a halogen
c) it is a noble gas
d)it is a reducing agent

Answer 1

Answer:

Hydrogen is placed above group in the periodic table because it has ns1 electron configuration like the alkali metals. ... Because hydrogen is a nonmetal and forms H- (hydride anions), it is sometimes placed above the halogens in the periodic table. Hydrogen also forms H2 dihydrogen like halogens.

hope it helps.........

mark as brainlist.........