Question

Magnesium ions form ionic bonds with fluoride ions in a 1:2 ratio. Explain how electrons are transferred between atoms and how the ionic bonds form in this compound.

Answer 1

Answer:

Two electrons

Explanation:

Magnesium ion form ionic bond with fluoride ion in 1:2 ratio. So F need one electron to complete it's octet. Mg sends its two electrons to each F atom and converted to and F is converted to . So, the ionic compound is .

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Answer 2

Answer:

Magnesium Ions: Mg2+

Fluoride Ions: F-

Since valency of Magnesium is 2 and that of Fluorine is 1, each Fluoride Ion gains 1 electron from Magnesium, hence, requiring 2 Fluoride Ions to gain net total 2 electrons from Magnesium Ion.

So, Mg —(electron)— F

|

(electron)

|

F

=> Mg2+ — F-

|

F-

Therefore, the formula is MgF2 (ratio 1:2)

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