(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

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

(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

Easy

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
$Cl - Br$

Explore More

Browse All

Question Bank

All Subjects

Class 11 Questions

Class 11

Chemistry Questions

Chapter

Classification of Elements and Periodicity in Properties

Subtopic

Extended or long form of periodic table

The element with atomic number $17$ is placed in which group of the periodic table?

Easy

View Solution

Explain the electronic configuration of periods in the periodic table.

Medium

View Solution

The element with atomic number $6$ is placed in:

Easy

View Solution

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 $(Ds)$

EasyNEET 2020

View Solution

How would you justify the presence of $18$ elements in the $5^{\text{th}}$ period of the Periodic Table?

Easy

View Solution

Vedclass Products

For Students

Vedclass Test Series

Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.

Start Free Trial

For Teachers

Exam Paper Generator

Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.

Try Free

For Institutes

Online Exam Module

Live online exams with unlimited students, 360° analytics & white-label branding.

See Demo

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

Similar Questions

The element with atomic number $17$ is placed in which group of the periodic table?

Explain the electronic configuration of periods in the periodic table.

The element with atomic number $6$ is placed in:

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 $(Ds)$

How would you justify the presence of $18$ elements in the $5^{\text{th}}$ period of the Periodic Table?

Vedclass Test Series

Exam Paper Generator

Online Exam Module

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 $(Ds)$