contestada

Chemistry help. Will give Brainliest!

What is the answer & how did you figure it out??

Which of the following ions came from an atom that lost two electrons?
O2- , MG2+ , N3- , Li+

The formula for aluminum fluoride is electrically neutral. Which of the following is the correct formula for this compound, which consists of only aluminum and fluoride ions? An aluminum ion has three positive charges:
AIF, AIF2, AIF3, AI3F

Respuesta :

dangerousmattoycs4v
#1. An element or ion that has lost two electrons must have a net charge of 2+, because it has two more protons than electrons, therefore the answer is Mg2+

#2. aluminum ions have an oxidation state of 3+ and fluoride has an oxidation state of 1-, therefore I’m order for the charges to cancel you need 3 fluoride ions.
Therefore, the answer is AlF3

Otras preguntas