What would be the formula of a salt made from Mg^+2 and F^-1​

Remember that ions are formed only when electrons move from one atom to ... Na + and Cl −, we have the ionic formula NaCl (Figure 3.5 “NaCl = Table Salt”). ... formula because we need two Cl − ions to balance the charge on one Mg 2+ ion. ... We need three F − ions to balance the charge on the Al 3+ ion,

Explanation:

answer:

the answer is 6 valence electrons.

explanation:

valence is the # of electrons on the outer most shell of an atom.

oxygen has 6.

although, the valency of oxygen is 2, because it only needs to make 2 covalent bonds, or gain 2 electrons, to achieve the stable octet configuration of a noble gas.

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