A certain polytomic ion contains 49 protons and 50 electrons. What's the net charge of this ion?

the charge is -1

Explanation:

 because the charge of proton is +and electron -  

charge = +49 +(-50)  

= -1

answer; i do believe the correct answer is (river); /// good luck

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).