Which of the following has the largest atomic radius: f-, f, cl-, or cl?

Option (c) is the correct answer.

Explanation:

More is the number of electrons present in an atom more will be its atomic size.

Atomic number of fluorine is 9 which means in neutral state a fluorine atom has only 9 electrons.

But when one electron is gained by a neutral fluorine atom then it changes into ion and there will be a total of 10 electrons in it.

On the other hand, atomic number of chlorine is 17 which means in neutral state a chlorine atom has only 7 electrons.

And, when this neutral chlorine atom gains an electron then it will form ion. Hence, total number of electrons present in a ion is 18.

Therefore, a ion has more number of electrons that is, 18 out of the given species.

Thus, we can conclude that atomic radius of ion is the largest.

petroleum? coal maybe?