Which of the following elements does not form a diatomic molecule? A. Chlorine.
B. Nitrogen.
C. Neon.
D. Hydrogen.

C

Explanation:

Neon is a noble gas, which is monoatomic.

Hydrogen

Explanation:

Hope this helps:)

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:

technetium is the most reactive. this is followed by silver. the least reactive out of these three elements is strontium.