All In One ISC Chemistry Class 12>Chapter 8 - d-and f-Block Elements>Chapter Practice>Q 9

EASY

12th ICSE

IMPORTANT

Earn 100

The atomic size of $Fe, Co$ and $Ni$ are nearly same. Explain the reason.

Important Questions on d-and f-Block Elements

MEDIUM

12th ICSE

IMPORTANT

All In One ISC Chemistry Class 12>Chapter 8 - d-and f-Block Elements>Chapter Practice>Q 10

Why

{Zn}^{2 +}

salts are white while

{Ni}^{2 +}

salts are blue?

EASY

12th ICSE

IMPORTANT

All In One ISC Chemistry Class 12>Chapter 8 - d-and f-Block Elements>Chapter Practice>Q 11

Out of

{[Sc {(H_{2} O)}_{6}]}^{3 +}

and

{[Ti {(H_{2} O)}_{6}]}^{3 +}

ions, which is coloured and why?

EASY

12th ICSE

IMPORTANT

All In One ISC Chemistry Class 12>Chapter 8 - d-and f-Block Elements>Chapter Practice>Q 12

What factors led to the appearance of colour in the transition elements?

EASY

12th ICSE

IMPORTANT

All In One ISC Chemistry Class 12>Chapter 8 - d-and f-Block Elements>Chapter Practice>Q 13

Draw the structure of manganate and permanganate ion.

EASY

12th ICSE

IMPORTANT

All In One ISC Chemistry Class 12>Chapter 8 - d-and f-Block Elements>Chapter Practice>Q 14

Write the formula of a compound in which transition metal is in

+ 6

oxidation state.

EASY

12th ICSE

IMPORTANT

All In One ISC Chemistry Class 12>Chapter 8 - d-and f-Block Elements>Chapter Practice>Q 15

In chromic acid

({CrO}_{3})

,

Cr

has

d^{0}

configuration but it is bright orange coloured solid, why?

EASY

12th ICSE

IMPORTANT

All In One ISC Chemistry Class 12>Chapter 8 - d-and f-Block Elements>Chapter Practice>Q 16

Reactivity of transition elements decreases almost regularly from

Sc

to

Cu

. Why?

EASY

12th ICSE

IMPORTANT

All In One ISC Chemistry Class 12>Chapter 8 - d-and f-Block Elements>Chapter Practice>Q 17

Why there is striking similarities (horizontal and vertical) among successive members of the transition series?