Chemistry Crash Course (Based on Revised Syllabus-2023)>Chapter 4 - Transition and Inner Transition Elements>Exercise>Q 20

EASY

12th Tamil Nadu Board

IMPORTANT

Earn 100

Mercury metal is liquid at room temperature, why?

Important Questions on Transition and Inner Transition Elements

MEDIUM

12th Tamil Nadu Board

IMPORTANT

Chemistry Crash Course (Based on Revised Syllabus-2023)>Chapter 4 - Transition and Inner Transition Elements>Exercise>Q 21

Explain the large difference in melting point of

Cr (1920 ° C)

and

Zn (420 ° C) ?

MEDIUM

12th Tamil Nadu Board

IMPORTANT

Chemistry Crash Course (Based on Revised Syllabus-2023)>Chapter 4 - Transition and Inner Transition Elements>Exercise>Q 22

Chromium is a typical hard metal, while mercury is a liquid. Explain.

MEDIUM

12th Tamil Nadu Board

IMPORTANT

Chemistry Crash Course (Based on Revised Syllabus-2023)>Chapter 4 - Transition and Inner Transition Elements>Exercise>Q 23

When a brown compound of manganese (A) is treated with

HCl

, it gives a gas (B). The gas taken in excess reacts with

{NH}_{3}

to give an explosive compound (C). Identify compounds A, B and C.

HARD

12th Tamil Nadu Board

IMPORTANT

Chemistry Crash Course (Based on Revised Syllabus-2023)>Chapter 4 - Transition and Inner Transition Elements>Exercise>Q 24

predict which of the following will be coloured in aqueous solution

{Ti}^{2 +}, V^{3 +} {Sc}^{4 +}, {Cu}^{+}, {Sc}^{3 +}, {Fe}^{3 +}, {Ni}^{2 +}

and

{Co}^{3 +}

HARD

12th Tamil Nadu Board

IMPORTANT

Chemistry Crash Course (Based on Revised Syllabus-2023)>Chapter 4 - Transition and Inner Transition Elements>Exercise>Q 25

Which metal in the

3 d

series exhibits

+ 1

oxidation state most frequently and why?

HARD

12th Tamil Nadu Board

IMPORTANT

Chemistry Crash Course (Based on Revised Syllabus-2023)>Chapter 4 - Transition and Inner Transition Elements>Exercise>Q 26

Complete the following

${Cr}_{2} {O_{7}}^{2 -} + I^{-} + H^{+} \to ?$

HARD

12th Tamil Nadu Board

IMPORTANT

Chemistry Crash Course (Based on Revised Syllabus-2023)>Chapter 4 - Transition and Inner Transition Elements>Exercise>Q 27

complete the following

${Na}_{2} {Cr}_{2} O_{7} + KCl \to ?$

EASY

12th Tamil Nadu Board

IMPORTANT

Chemistry Crash Course (Based on Revised Syllabus-2023)>Chapter 4 - Transition and Inner Transition Elements>Exercise>Q 28

What happens when

K_{2} {Cr}_{2} O_{7}

is heated strongly?