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Q.

A element M has an atomic mass 19 and atomic number 9. Its ion is represented by

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a

M^2–

b

M⁺

c

M²⁺

d

M^–

answer is C.

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Detailed Solution

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Z = 9 is Fluorine atom.

It's ion is represented as F^-.

Fluorine gains one electron to attain octet. .

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A element M has an atomic mass 19 and atomic number 9. Its ion is represented by