(D) Valency is defined as the combining capacity of an element. Noble gases,such as $Kr$ (Krypton),have a completely filled valence shell ($ns^2 np^6$

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(D) Valency is defined as the combining capacity of an element. Noble gases,such as $Kr$ (Krypton),have a completely filled valence shell ($ns^2 np^6$ configuration). Due to their stable electronic configuration,they have very little tendency to gain,lose,or share electrons,resulting in a valency of zero.

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

Medium

Which of the following elements has a valency of zero?

A
$Na$
B
$Be$
C
$Al$
D
$Kr$

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Class 11 Questions

Class 11

Chemistry Questions

Chapter

Classification of Elements and Periodicity in Properties

Subtopic

Valency and oxidation state

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

DifficultJEE MAIN 2015

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

Medium

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Which metals follow the stock notation method?

Easy

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What will be the formula of the compound formed between the following elements?
$(i)$ The element with atomic number $19$ and iodine.
$(ii)$ The first element and oxygen.

Easy

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

Element Information

$P$ Period number: $2$,Group number: $15$

$Q$ Period number: $3$,Group number: $2$

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

Element	Information
$P$	Period number: $2$,Group number: $15$
$Q$	Period number: $3$,Group number: $2$

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Which of the following elements has a valency of zero?

Similar Questions

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

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

Which metals follow the stock notation method?

What will be the formula of the compound formed between the following elements?$(i)$ The element with atomic number $19$ and iodine.$(ii)$ The first element and oxygen.

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

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What will be the formula of the compound formed between the following elements?
$(i)$ The element with atomic number $19$ and iodine.
$(ii)$ The first element and oxygen.

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

Element Information

$P$ Period number: $2$,Group number: $15$

$Q$ Period number: $3$,Group number: $2$

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