The following reaction KBr + Mg -->

a
will occur because Mg is more active than K
b
will not occur because Mg is more active than K
c
will occur because K is more active than Mg
d
will not occur because K is more active than Mg

will occur because K is more active than Mg

answer: -

reaction:

na + cl ⇌ nacl

balanced chemical equation:

na + 2cl ⇌ nacl2

sodium + clorine goes to form sodium chloride (table salt).

the product is nacl2.

and the reactants are na and cl.

(note: if you don’t know what ⇌ means, read below: -

⇌(double head arrow) means reversible reaction).