(B) The electronic configuration $1s^2 2s^2 2p^6 3s^1$ indicates that the metal $M$ has $1$ valence electron in its outermost shell. Therefore,the val

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(B) The electronic configuration $1s^2 2s^2 2p^6 3s^1$ indicates that the metal $M$ has $1$ valence electron in its outermost shell. Therefore,the valency of the metal $M$ is $+1$. Oxygen typically forms an oxide ion with a valency of $-2$ $(O^{2-})$. By applying the criss-cross method for the valencies of $M^{+1}$ and $O^{-2}$,the chemical formula of the oxide is $M_2O$.

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

Medium

The electronic configuration of a metal $M$ is $1s^2 2s^2 2p^6 3s^1$. What will be the formula of its oxide?

A
$MO$
B
$M_2O$
C
$M_2O_3$
D
$MO_2$

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Class 11 Questions

Class 11

Chemistry Questions

Chapter

Classification of Elements and Periodicity in Properties

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Valency and oxidation state

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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Consider the following information about elements $P$ and $Q$:

Element Period and Group

$Q$ Period $2$,Group $15$

$P$ Period $3$,Group $2$

Then the formula of the compound formed by $P$ and $Q$ elements is:

Medium

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Choose the incorrect formula out of the four compounds for an element $X$ below.

DifficultJEE MAIN 2015

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The valency of inert gases is

Easy

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The oxidation state and covalency of $S$ in $S_8$ are respectively .......

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Element	Period and Group
$Q$	Period $2$,Group $15$
$P$	Period $3$,Group $2$

The electronic configuration of a metal $M$ is $1s^2 2s^2 2p^6 3s^1$. What will be the formula of its oxide?

Similar Questions

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?

Consider the following information about elements $P$ and $Q$: Element Period and Group $Q$ Period $2$,Group $15$ $P$ Period $3$,Group $2$ Then the formula of the compound formed by $P$ and $Q$ elements is:

Choose the incorrect formula out of the four compounds for an element $X$ below.

The valency of inert gases is

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Online Exam Module

Consider the following information about elements $P$ and $Q$:

Element Period and Group

$Q$ Period $2$,Group $15$

$P$ Period $3$,Group $2$

Then the formula of the compound formed by $P$ and $Q$ elements is: