PLEASE HELP PLS What is the alkaline earth metal with valence electrons in the 3rd energy level?
А: Magnesium
B: Calcium
C: Sodium
D: Aluminum

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).

answer carbon and three oxygen atoms;