(D) The element $M$ has $3$ valence electrons,so its valency is $3$ and it forms $M^{3+}$ ions.The element $A$ has $7$ valence electrons,so its valenc

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(D) The element $M$ has $3$ valence electrons,so its valency is $3$ and it forms $M^{3+}$ ions.The element $A$ has $7$ valence electrons,so its valency is $1$ and it forms $A^{-}$ ions.To form a neutral compound,one $M^{3+}$ ion combines with three $A^{-}$ ions.Therefore,the chemical formula of the compound is $MA_3$.

Class 11 Chemistry Classification of Elements and Periodicity in Properties Valency and oxidation state

Easy

If the electronic configuration of $M = 2, 8, 3$ and that of $A = 2, 8, 7$,the formula of the compound is

A
$M_2A_3$
B
$MA_2$
C
$M_2A$
D
$MA_3$

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Class 11 Questions

Class 11

Chemistry Questions

Chapter

Classification of Elements and Periodicity in Properties

Subtopic

Valency and oxidation state

The number of elements among $O, Cl, F, N, P, Sn, Ti, K, Sc$ which show more than one non-zero oxidation state is:

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The oxidation state of $I$ in $IPO_4$ is

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Which of the following elements exhibits a valency of $2$?

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Using Stock notation,represent the following compounds: $HAuCl_{4}$,$Tl_{2}O$,$FeO$,$Fe_{2}O_{3}$,$CuI$,$CuO$,$MnO$,and $MnO_{2}$.

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Which of the properties remains unchanged on descending a group in the periodic table?

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If the electronic configuration of $M = 2, 8, 3$ and that of $A = 2, 8, 7$,the formula of the compound is

Similar Questions

The number of elements among $O, Cl, F, N, P, Sn, Ti, K, Sc$ which show more than one non-zero oxidation state is:

The oxidation state of $I$ in $IPO_4$ is

Which of the following elements exhibits a valency of $2$?

Using Stock notation,represent the following compounds: $HAuCl_{4}$,$Tl_{2}O$,$FeO$,$Fe_{2}O_{3}$,$CuI$,$CuO$,$MnO$,and $MnO_{2}$.

Which of the properties remains unchanged on descending a group in the periodic table?

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