(C) The melting points of transition metals depend on the number of unpaired electrons and the strength of metallic bonding.For the $3d$ series, $Mn$

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

$Mn < Fe$, $Tc < Ru$ and $Os < Re$

(C) The melting points of transition metals depend on the number of unpaired electrons and the strength of metallic bonding.For the $3d$ series, $Mn$ has a lower melting point than $Fe$ because $Mn$ has a stable $d^5$ configuration, which results in weaker metallic bonding compared to $Fe$.For the $4d$ and $5d$ series, the trend is $Tc Thus, the correct order is $Mn < Fe$, $Tc < Ru$, and $Os < Re$.

Class 12 Chemistry d-and f-Block Elements General Characteristics

Difficult

The correct option with the order of melting points of the pairs $(Mn, Fe)$, $(Tc, Ru)$ and $(Re, Os)$ is $:$

JEE MAIN 2025 All JEE MAIN

A
$Fe < Mn$, $Ru < Tc$ and $Re < Os$
B
$Mn < Fe$, $Tc < Ru$ and $Re < Os$
C
$Mn < Fe$, $Tc < Ru$ and $Os < Re$
D
$Fe < Mn$, $Ru < Tc$ and $Os < Re$

Explore More

Browse All

Question Bank

All Subjects

Class 12 Questions

Class 12

Chemistry Questions

Chapter

d-and f-Block Elements

Subtopic

General Characteristics

Previous Year

JEE MAIN 2025 Paper All JEE MAIN years →

The stability of $Cu^{2+}$ is more than $Cu^{+}$ salts in aqueous solution due to -

MediumNEET 2023

View Solution

For the ions $Zn^{2+}, Ni^{2+}$ and $Cr^{3+}$ which among the following statements is correct?
(Atomic number of $Zn = 30, Ni = 28$ and $Cr = 24$)

MediumAIIMS 2019

View Solution

Pairs of elements with the same number of electrons in their respective $4f$ orbital are [Atomic number: $Eu-63, Gd-64, Dy-66, Ho-67, Tm-69, Yb-70, Lu-71, Hf-72$]. Choose the correct answer from the options given below:

MediumJEE MAIN 2026

View Solution

In chromyl chloride,the number of $d$-electrons present on chromium is same as in (Given atomic number of $Ti = 22, V = 23, Cr = 24, Mn = 25, Fe = 26$)

MediumJEE MAIN 2023

View Solution

Highest $(+7)$ oxidation state is shown by

EasyAIIMS 1999

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

The correct option with the order of melting points of the pairs $(Mn, Fe)$, $(Tc, Ru)$ and $(Re, Os)$ is $:$

Similar Questions

The stability of $Cu^{2+}$ is more than $Cu^{+}$ salts in aqueous solution due to -

For the ions $Zn^{2+}, Ni^{2+}$ and $Cr^{3+}$ which among the following statements is correct?(Atomic number of $Zn = 30, Ni = 28$ and $Cr = 24$)

Pairs of elements with the same number of electrons in their respective $4f$ orbital are [Atomic number: $Eu-63, Gd-64, Dy-66, Ho-67, Tm-69, Yb-70, Lu-71, Hf-72$]. Choose the correct answer from the options given below:

In chromyl chloride,the number of $d$-electrons present on chromium is same as in (Given atomic number of $Ti = 22, V = 23, Cr = 24, Mn = 25, Fe = 26$)

Highest $(+7)$ oxidation state is shown by

Vedclass Test Series

Exam Paper Generator

Online Exam Module

For the ions $Zn^{2+}, Ni^{2+}$ and $Cr^{3+}$ which among the following statements is correct?
(Atomic number of $Zn = 30, Ni = 28$ and $Cr = 24$)