(C) The given electronic configuration is $ns^2 np^1$.This indicates that the element $(A)$ has $3$ valence electrons.Therefore,the valency of element

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(C) The given electronic configuration is $ns^2 np^1$.This indicates that the element $(A)$ has $3$ valence electrons.Therefore,the valency of element $(A)$ is $+3$.The valency of oxygen $(O)$ is $-2$.By crossing the valencies,the formula of the oxide is $A_2O_3$.

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

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An element $(A)$ occurs in the short period having electronic configuration $ns^2 np^1$. The formula of its oxide will be

A
$AO_3$
B
$AO_2$
C
$A_2O_3$
D
$AO$

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Class 11 Questions

Class 11

Chemistry Questions

Chapter

Classification of Elements and Periodicity in Properties

Subtopic

Valency and oxidation state

$A$ compound contains three elements $A$,$B$ and $C$. If the oxidation states are $A = +2$,$B = +5$ and $C = -2$,the possible formula of the compound is

Medium

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What is the valency of carbon? When carbon possesses three bonds,it does not have a charge; when does such a thing happen and why?

Medium

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Number of elements from the following that $CANNOT$ form compounds with valencies which match with their respective group valencies is
$B, C, N, S, O, F, P, Al, Si$

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

Easy

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The maximum valency of an element with atomic number $7$ is

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An element $(A)$ occurs in the short period having electronic configuration $ns^2 np^1$. The formula of its oxide will be

Similar Questions

$A$ compound contains three elements $A$,$B$ and $C$. If the oxidation states are $A = +2$,$B = +5$ and $C = -2$,the possible formula of the compound is

What is the valency of carbon? When carbon possesses three bonds,it does not have a charge; when does such a thing happen and why?

Number of elements from the following that $CANNOT$ form compounds with valencies which match with their respective group valencies is $B, C, N, S, O, F, P, Al, Si$

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

The maximum valency of an element with atomic number $7$ is

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Number of elements from the following that $CANNOT$ form compounds with valencies which match with their respective group valencies is
$B, C, N, S, O, F, P, Al, Si$