EASY
JEE Main
IMPORTANT
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Acidified potassium dichromate is treated with hydrogen sulphide. In the reaction, the oxidation number of chromium

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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 19
Which element gives the maximum number of oxides?
EASY
JEE Main
IMPORTANT
Chemistry Crash Course JEE Main>Chapter 27 - The d- and f-block Elements>Level 1>Q 20
Knowing that the chemistry of lanthanides (Ln) is dominated by their +3 oxidation state, which of the following statements is incorrect?
EASY
JEE Main
IMPORTANT
Chemistry Crash Course JEE Main>Chapter 27 - The d- and f-block Elements>Level 1>Q 21
How many d‐electrons are present in a Cr2+ ion?
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 3d-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
(n-1)d10ns2 is the general electronic configuration of