How many $\mathrm{d}‐$electrons are present in a ${\mathrm{Cr}}^{2+}$ ion?

Important Questions on The d- and f-block Elements

EASY

JEE Main

IMPORTANT

Chemistry Crash Course JEE Main>Chapter 27 - The d- and f-block Elements>Level 1>Q 22

Which of the following ions having following electronic structure would have the maximum magnetic moment?

EASY

JEE Main

IMPORTANT

Chemistry Crash Course JEE Main>Chapter 27 - The d- and f-block Elements>Level 1>Q 23

Which of the following element does not belong to the first transition series?

EASY

JEE Main

IMPORTANT

Chemistry Crash Course JEE Main>Chapter 27 - The d- and f-block Elements>Level 1>Q 24

Which of the following does not have valence electron in the $3\mathrm{d}$-subshell?

EASY

JEE Main

IMPORTANT

Chemistry Crash Course JEE Main>Chapter 27 - The d- and f-block Elements>Level 1>Q 25

The transition metals have a lesser tendency to form ions due to the 

EASY

JEE Main

IMPORTANT

Chemistry Crash Course JEE Main>Chapter 27 - The d- and f-block Elements>Level 1>Q 26

$(\mathrm{n}-1){\mathrm{d}}^{10}{\mathrm{ns}}^2$ is the general electronic configuration of

EASY

JEE Main

IMPORTANT

Chemistry Crash Course JEE Main>Chapter 27 - The d- and f-block Elements>Level 1>Q 27

The common oxidation state/states of scandium, a transition element is/are [Atomic Number of $\mathrm{Sc}=21$]

EASY

JEE Main

IMPORTANT

Chemistry Crash Course JEE Main>Chapter 27 - The d- and f-block Elements>Level 1>Q 28

Which of the following has the maximum unpaired electrons?

EASY

JEE Main

IMPORTANT

Chemistry Crash Course JEE Main>Chapter 27 - The d- and f-block Elements>Level 1>Q 29

"$925$ fine silver" is an alloy of