(D) $[Ar] \, 4s^2 \, 3d^5$ corresponds to atomic number $25$ $(Mn)$,which is a $d$-block element.For the $III \ B$ group,the magic numbers are $18, 18

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

(D) $[Ar] \, 4s^2 \, 3d^5$ corresponds to atomic number $25$ $(Mn)$,which is a $d$-block element.For the $III \ B$ group,the magic numbers are $18, 18, 32$.The first transition series ($3d$-series) contains elements with atomic numbers $21$ to $30$,totaling $10$ elements.Therefore,all the given statements are correct.

Class 12 Chemistry d-and f-Block Elements Mix Examples-d and f-Block Elements

Easy

Select the correct option.

A
$[Ar] \, 4s^2 \, 3d^5$ configuration belongs to the $d$-block.
B
The magic numbers for the $III \ B$ group are $18, 18, 32$.
C
There are a total of $10$ elements in the first transition series.
D
All are correct.

Explore More

Browse All

Question Bank

All Subjects

Class 12 Questions

Class 12

Chemistry Questions

Chapter

d-and f-Block Elements

Subtopic

Mix Examples-d and f-Block Elements

Which of the following will give a green hydrated ion?

Easy

View Solution

Which of the following orders is correct?

Easy

View Solution

Match the following:
List-$I$ List-$II$
$A$. Oxidation state of $V$ in $VOCl_2$ $I$. $0$
$B$. Number of unpaired electrons in $MnO_4^{2-}$ ion $II$. $1$
$C$. Number of unpaired electrons in $[NiCl_4]^{2-}$ ion $III$. $5$
$D$. This oxidation state is exhibited by all lanthanide ions $IV$. $3$
$V$. $4$
$VI$. $2$

The correct answer is:

List-$I$	List-$II$
$A$. Oxidation state of $V$ in $VOCl_2$	$I$. $0$
$B$. Number of unpaired electrons in $MnO_4^{2-}$ ion	$II$. $1$
$C$. Number of unpaired electrons in $[NiCl_4]^{2-}$ ion	$III$. $5$
$D$. This oxidation state is exhibited by all lanthanide ions	$IV$. $3$
	$V$. $4$
	$VI$. $2$