All In One ISC Chemistry Class 12>Chapter 8 - d-and f-Block Elements>Chapter Practice>Q 6

EASY

12th ICSE

IMPORTANT

Earn 100

The spin only magnetic moment of $M^{2 +}$ ion. $(Z = 27)$

Important Questions on d-and f-Block Elements

EASY

12th ICSE

IMPORTANT

All In One ISC Chemistry Class 12>Chapter 8 - d-and f-Block Elements>Chapter Practice>Q 7

Why does copper metal not replace hydrogen from acid?

EASY

12th ICSE

IMPORTANT

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

Why are

E^{\circ}

values of

Mn, Zn

more negative than expected?

EASY

12th ICSE

IMPORTANT

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

The atomic size of

Fe, Co

and

Ni

are nearly same. Explain the reason.

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.