(B) The electronic configuration of the elements are:$Na$ $(Z=11)$: $1s^2 2s^2 2p^6 3s^1$ (Period $3$)$Cl$ $(Z=17)$: $1s^2 2s^2 2p^6 3s^2 3p^5$ (Perio

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(B) The electronic configuration of the elements are:$Na$ $(Z=11)$: $1s^2 2s^2 2p^6 3s^1$ (Period $3$)$Cl$ $(Z=17)$: $1s^2 2s^2 2p^6 3s^2 3p^5$ (Period $3$)$Ca$ $(Z=20)$: $1s^2 2s^2 2p^6 3s^2 3p^6 4s^2$ (Period $4$)$Br$ $(Z=35)$: $1s^2 2s^2 2p^6 3s^2 3p^6 3d^{10} 4s^2 4p^5$ (Period $4$)Therefore,$Na$ and $Cl$ both belong to period $3$.

Class 11 Chemistry Classification of Elements and Periodicity in Properties Extended or long form of periodic table

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Which of the following pairs has both members from the same period of the periodic table?

A
$Na - Ca$
B
$Na - Cl$
C
$Ca - Cl$
D
$Cl - Br$

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Class 11 Questions

Class 11

Chemistry Questions

Chapter

Classification of Elements and Periodicity in Properties

Subtopic

Extended or long form of periodic table

Assuming that elements are formed to complete the $7^{th}$ period,what would be the atomic number of the alkaline earth metal of the $8^{th}$ period?

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Which one of the following belongs to the representative group of elements in the periodic table?

Easy

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$Zn$ belongs to which group in the periodic table?

Easy

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According to modern periodic law,the properties of elements repeat at regular intervals when the elements are arranged in order of

Medium

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Identify the incorrect match :

Temporary Systematic Name $IUPAC$ Official Name

$a$. Unnilunium $(101)$ $i$. Mendelevium $(Md)$

$b$. Unniltrium $(103)$ $ii$. Lawrencium $(Lr)$

$c$. Unnilhexium $(106)$ $iii$. Seaborgium $(Sg)$

$d$. Ununnilium $(110)$ $iv$. Darmstadtium $(Ds)$

Temporary Systematic Name	$IUPAC$ Official Name
$a$. Unnilunium $(101)$	$i$. Mendelevium $(Md)$
$b$. Unniltrium $(103)$	$ii$. Lawrencium $(Lr)$
$c$. Unnilhexium $(106)$	$iii$. Seaborgium $(Sg)$
$d$. Ununnilium $(110)$	$iv$. Darmstadtium $(Ds)$

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Which of the following pairs has both members from the same period of the periodic table?

Similar Questions

Assuming that elements are formed to complete the $7^{th}$ period,what would be the atomic number of the alkaline earth metal of the $8^{th}$ period?

Which one of the following belongs to the representative group of elements in the periodic table?

$Zn$ belongs to which group in the periodic table?

According to modern periodic law,the properties of elements repeat at regular intervals when the elements are arranged in order of

Identify the incorrect match : Temporary Systematic Name $IUPAC$ Official Name $a$. Unnilunium $(101)$ $i$. Mendelevium $(Md)$ $b$. Unniltrium $(103)$ $ii$. Lawrencium $(Lr)$ $c$. Unnilhexium $(106)$ $iii$. Seaborgium $(Sg)$ $d$. Ununnilium $(110)$ $iv$. Darmstadtium $(Ds)$

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Identify the incorrect match :

Temporary Systematic Name $IUPAC$ Official Name

$a$. Unnilunium $(101)$ $i$. Mendelevium $(Md)$

$b$. Unniltrium $(103)$ $ii$. Lawrencium $(Lr)$

$c$. Unnilhexium $(106)$ $iii$. Seaborgium $(Sg)$

$d$. Ununnilium $(110)$ $iv$. Darmstadtium $(Ds)$