Alpha Question Bank for Medical: Chemistry>Chapter 19 - The d- and f-Block Elements>Exercise 2>Q 67

EASY

NEET

IMPORTANT

Earn 100

The colour of ${KMnO}_{4}$ is due to

75% studentsanswered this correctly

Important Questions on The d- and f-Block Elements

EASY

NEET

IMPORTANT

Alpha Question Bank for Medical: Chemistry>Chapter 19 - The d- and f-Block Elements>Exercise 2>Q 68

The transition elements that has the lowest enthalpy of atomisation is:

EASY

NEET

IMPORTANT

Alpha Question Bank for Medical: Chemistry>Chapter 19 - The d- and f-Block Elements>Exercise 2>Q 69

The element that usually does not show a variable oxidation state is

EASY

NEET

IMPORTANT

Alpha Question Bank for Medical: Chemistry>Chapter 19 - The d- and f-Block Elements>Exercise 2>Q 70

If a non-metal is added to the interstitial sites of a metal, then the metal becomes

EASY

NEET

IMPORTANT

Alpha Question Bank for Medical: Chemistry>Chapter 19 - The d- and f-Block Elements>Exercise 2>Q 71

Copper sulphate dissolves in excess of

KCN

to give

MEDIUM

NEET

IMPORTANT

Alpha Question Bank for Medical: Chemistry>Chapter 19 - The d- and f-Block Elements>Exercise 2>Q 72

[Cr {(H_{2} O)}_{6}] {Cl}_{3}

(at no. of

Cr = 24

) has a magnetic moment of

3.83 B . M .

The correct distribution of

3 d

electrons in the chromium of the complex is

EASY

NEET

IMPORTANT

Alpha Question Bank for Medical: Chemistry>Chapter 19 - The d- and f-Block Elements>Exercise 2>Q 73

The d-electron configuration of

{Cr}^{2 +}, {Mn}^{2 +}, {Fe}^{2 +}

and

{Ni}^{2 +}

are

3 d^{4}, 3 d^{5}, 3 d^{6}

and

3 d^{8}

respectively, which one of the following aqua-complex will exhibit the minimum paramagnetic behaviour?

MEDIUM

NEET

IMPORTANT

Alpha Question Bank for Medical: Chemistry>Chapter 19 - The d- and f-Block Elements>Exercise 2>Q 75

Across the lanthanide series, the basicity of the lanthanide hydroxides _____.

MEDIUM

NEET

IMPORTANT

Alpha Question Bank for Medical: Chemistry>Chapter 19 - The d- and f-Block Elements>Exercise 2>Q 76

$Cu + X ⟶ Cu {({NO}_{3})}_{2} + 2 H_{2} O + 2 {NO}_{2}$

Here $X$ is: