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  • Magnesium reacts with an element to form an ionic compound with the ground state electronic c

Magnesium reacts with an element \mathrm{(x)} to form an ionic compound with the ground state electronic configuration of \mathrm{(x) \: is \: 1 s^2 2 s^2 2 p^3}, the simplest  formula for this compound is -

Option: 1

\mathrm{Mg_2 X_3}
 


Option: 2

\mathrm{MgX}_2


Option: 3

\mathrm{Mg}_2 \mathrm{X}


Option: 4

\mathrm{Mg}_3 \mathrm{X}_2


Answers (1)

best_answer

electronic configuration of \mathrm{x} is \mathrm{1 s^2 2 s^2 2 p^3} so valency of \mathrm{x} will be 3
Magnesium ion \mathrm{=\mathrm{Mg}^{2+}}

Formula :\mathrm{\mathrm{Mg}_{3}X_2}

Hence option 4 is correct.
 

Posted by

seema garhwal

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