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Nature of Matter

Two elements ...

Question

Two elements M and X have electronic configurations 2, 8, 3 and 2, 8, 6 respectively. Identify the correct formula of the compound formed.

A

MX

_{2}

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B

M

_{2}

X

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C

M

_{2}

X

_{3}

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D

M_{3}

X

_{2}

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Solution

The correct option is C M $_{2}$ X $_{3}$
Given that the electronic configuration of X = 2,8,3 and Y = 2,8,6. Thus the valencies they posses to attain noble gas configuration are; X = +3 and Y = -2. Therefore the formula of the compound formed can be written as; $M_{2} X_{3}$ .

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