Question

A certain polyatomic ion contains 49 protons and 50 electrons. What's the net charge of this ion?Question options:A) +1B) +2C) –1D) –2

Answer 1

Explanation:

We have to find the net charge of a polyatomic ion that contains 49 protons and 50 electrons.

n° of protons = 49 n° of electrons = 50

The charge of each electron is -1 and the charge of each proton is +1.

charge of electron = -1 charge of proton = +1

Finally the net charge will be:

Net charge = n° of electrons * charge of electron + n° of protons * charge of proton

Net charge = 50 * (-1) + 49 * (+1)

Net charge = -1

Answer: C) -1