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6 February, 01:42

A compound forms between magnesium cation and phosphate anion. Select ALL statements that are TRUE. Group of answer choices The chemical formula of the compound is Mg3 (PO4) 2. The compound is a covalent compound. The most stable form of a magnesium ion has a charge of 2 + This compound ONLY contains ionic bonds.

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  1. 6 February, 03:40
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    Let us label the options in the questions as follows:

    Question:

    A compound forms between magnesium cation and phosphate anion. Select ALL statements that are TRUE. Group of answer choices

    A. The chemical formula of the compound is Mg₃ (PO₄) ₂.

    B. The compound is a covalent compound.

    C. The most stable form of a magnesium ion has a charge of 2+

    D. This compound ONLY contains ionic bonds.

    Answer:

    Options A and C

    Explanation:

    Let us explore all the options,

    A. The formula, Mg₃ (PO₄) ₂, satisfies the charges of both the magnesium (Mg²⁺) and the phosphate ions (PO₄²⁻). Mg²⁺ has three ions, which means the positive charge will be 6 +. The phosphate ions has a negative charge of 3, so two ions of phosphate can counter the six positive charges in the compound. So, the statement is true

    B. The compound is not covalent, as Mg²⁺ and PO₄²⁻ ions are bounded by electrostatic forces. So, the statement is false

    C. The stable charge of Mg is 2+. Mg is a s block element in the third period. It does not have any empty inner d orbital. Which makes 2 + oxidation state the most stable. So, the statement is true

    D. The phosphate group is composed of phosphorous atom covalently bonded to four oxygen atoms. Hence, the compound DOES NOT contain ONLY ionic bonds. So, the given statement is false
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