Match the catalysts to the correct process. Catalyst Process A. T i C l 3 i. Wacker process B. P d C l 2 ii. Ziegler – Natta polymerisation C. C u C l 2 iii. Contact process` D. V 2 O 5 iv. Deacon’s process

A → i i , B → i , C → i v , D → i i i

A → i i i , B → i , C → i i , D → i v

A → i i i , B → i i , C → i v , D → i

A → i i , B → i i i , C → i v , D → i

MEDIUM

Earn 100

Define density and explain the trend of density among $d -$ block elements.

Important Questions on d- Block Elements : Transition Elements

MEDIUM

Chemistry>Inorganic Chemistry>d- Block Elements : Transition Elements>General Characteristics of Transition Elements

The statement that is INCORRECT about the interstitial compounds is:

EASY

Chemistry>Inorganic Chemistry>d- Block Elements : Transition Elements>General Characteristics of Transition Elements

Find the metallic and ferromagnetic substance.

MEDIUM

Chemistry>Inorganic Chemistry>d- Block Elements : Transition Elements>General Characteristics of Transition Elements

Which one of the following species is stable in aqueous solution?

HARD

Chemistry>Inorganic Chemistry>d- Block Elements : Transition Elements>General Characteristics of Transition Elements

If the magnetic moment of a di-oxygen species is

1.73 B . M .

, it may be

HARD

Chemistry>Inorganic Chemistry>d- Block Elements : Transition Elements>General Characteristics of Transition Elements

The equation which is balanced and represents the correct product(s) is

MEDIUM

Chemistry>Inorganic Chemistry>d- Block Elements : Transition Elements>General Characteristics of Transition Elements

Magnetic moment

2.83

BM is given by which of the following ions?
(At.nos.

T i = 22, C r = 24, M n = 25, N i = 28)

EASY

Chemistry>Inorganic Chemistry>d- Block Elements : Transition Elements>General Characteristics of Transition Elements

Which of the following are the transition metal ions responsible for colour in ruby and emerald respectively?

HARD

Chemistry>Inorganic Chemistry>d- Block Elements : Transition Elements>General Characteristics of Transition Elements

Among the statements

(a) - (d)

, the incorrect ones are:

(a)

Octahedral

C o (I I I)

complexes with strong field ligands have very high magnetic moments

(b)

When

∆_{0} < P

, the d-electron configuration of

C o (I I I)

in an octahedral complex is

t_{e g}^{4} e_{g}^{2}

(c)

Wavelength of light absorbed by

{[C o {(e n)}_{3}]}^{3 +}

is lower than that of

{[{C o F}_{6}]}^{3 -}

(d)

If the

∆_{0}

for an octahedral complex of

C o (I I I)

18,000 c m^{- 1}

, the

∆_{t}

for its tetrahedral complex with the same ligand will be

16,000 c m^{- 1}

HARD

Chemistry>Inorganic Chemistry>d- Block Elements : Transition Elements>General Characteristics of Transition Elements

Spin only magnetic moment

2 .84 BM

is given by:

(Atomic Number of

Ni =28, Ti =22, Cr =24, Co =27

)

EASY

Chemistry>Inorganic Chemistry>d- Block Elements : Transition Elements>General Characteristics of Transition Elements

The colour and magnetic nature of manganate ion

({MnO}_{4}^{2 -})

is-

MEDIUM

Chemistry>Inorganic Chemistry>d- Block Elements : Transition Elements>General Characteristics of Transition Elements

{[P d (F) (C l) (B r) (I)]}^{2 -}

has

n

number of geometrical isomers. Then, the spin-only magnetic moment and crystal field stabilization energy

[C F S E]

{[F e {(C N)}_{6}]}^{n - 6}

, respectively, are:
[Note: Ignore the pairing energy]

MEDIUM

Chemistry>Inorganic Chemistry>d- Block Elements : Transition Elements>General Characteristics of Transition Elements

The pair of metal ions that can give a spin only magnetic moment of

3.9 B M

for the complex

[M {(H_{2} O)}_{6}] C l_{2}

, is:

EASY

Chemistry>Inorganic Chemistry>d- Block Elements : Transition Elements>General Characteristics of Transition Elements

The third ionization enthalpy is minimum for:

EASY

Chemistry>Inorganic Chemistry>d- Block Elements : Transition Elements>General Characteristics of Transition Elements

Consider the hydrated ions of

T i^{2 +}, V^{2 +}, T i^{3 +}

and

S c^{3 +}

. The correct order of their spin-only magnetic moments is:

MEDIUM

Chemistry>Inorganic Chemistry>d- Block Elements : Transition Elements>General Characteristics of Transition Elements

The correct order of the spin-only magnetic moments of the following complexes is:

(I)

[C r {(H_{2} O)}_{6}] B r_{2}

(I I)

N a_{4} [F e {(C N)}_{6}]

(I I I)

N a_{3} [F e {(C_{2} O_{4})}_{3}] (Δ_{0} > P)

(I V)

{(E t_{4} N)}_{2} [C o C l_{4}]

MEDIUM

Chemistry>Inorganic Chemistry>d- Block Elements : Transition Elements>General Characteristics of Transition Elements

Although Zirconium belongs to

4 d

transition series and Hafnium to

5 d

transition series even then they show similar physical and chemical properties because _____.

MEDIUM

Chemistry>Inorganic Chemistry>d- Block Elements : Transition Elements>General Characteristics of Transition Elements

Which of the following statement is wrong?

HARD

Chemistry>Inorganic Chemistry>d- Block Elements : Transition Elements>General Characteristics of Transition Elements

Maximum number of covalent bonds formed by

N

and

P

are -

HARD

Chemistry>Inorganic Chemistry>d- Block Elements : Transition Elements>General Characteristics of Transition Elements

Which of the following arrangements does not represent the correct order of the property stated against it?

EASY

Chemistry>Inorganic Chemistry>d- Block Elements : Transition Elements>General Characteristics of Transition Elements

Match the catalysts to the correct process.

	Catalyst		Process
A.	$T i C l_{3}$	i.	Wacker process
B.	$P d C l_{2}$	ii.	Ziegler – Natta polymerisation
C.	$C u C l_{2}$	iii.	Contact process`
D.	$V_{2} O_{5}$	iv.	Deacon’s process

Define density and explain the trend of density among d-block elements.

Important Questions on d- Block Elements : Transition Elements

Learn and Prepare for any exam you want !

Define density and explain the trend of density among $d -$ block elements.