Question # 1

The energy difference of d-orbitals varies from

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Atom to atom

lon to ion

Electron to electron

proton to proton

Zn has

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Zero unpaired electrons

Three unpaired electrons

Five unpaired electrons

One paired electrons

which of the following is a typical transition metal?

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Sc

Y

Ra

Co

Oxidation state of Mn' in KMnO4. K2MnO4, MnO2 and MnSO4 is in the order

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+7.+6.+2,+4

+6,+7,+2,+4

+7. +6.+4.+2

+4, +6, +7,+2

When light is exposed to transtion element, then electrons jump from lower orbitals to higher orbitals in

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Orbitals of s-subshell

Orbitals of d-subshell

Orbitals of p-subshell

between different shells

The strength of binding energy of transition elements depends upon

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Number of electron pairs

Number of unpaired electrons

Number of neutrons

Number of protons

The total number of 3d-series transition elements is

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10

40

14

58

Group VIB of transition elements contains

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Zn. Cd. Hg

Cr. Mo, w

Fe. Ru, Os

Mn. Te. Re

Number of electrons involved in d-d transition of [Ti(H2O)6]+3

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1

3

2

4

Group of element belongs to IIB group

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Zn. Cd. Hg

Cu. Ag. Au

Sc. Y. La

Ni. Pd. Pt

d-d transition cannot be shows by

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Cu+1

Sc+3

Zn+2

All

All 3d series elements show an oxidation state of oxidation state

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+1

+2

+3

Zero

Which of the following pair has the same no. of electrons in d- subshell

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Sc+3,Ti+3

Mn+2,Fe+3

Ti+3,V+3

Cr+3.Co+2

Which of the folowing compound is expected to be colored

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Na2SO4

ZnCl2

MgF₂

CuF₂

Ti+3 shows minimum absorption (maximum transmittance) at-------and-------wavelength

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Yellow, Green

Red. Yellow

Blue. Green

Red. Blue

Which ion has maximum number of unpaired electrons in 3d subshell and shows maximum paramagnetic behavior?

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Cr+3

Ni+2

Co+2

Fe+3

which one pair has the same oxidation state of-Fe?

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FeSO4 and FeCl4

FeCl4and FeCl3

FeSO4 and FeCl2

Fe2(SO4)3 and FeSO4

Which of the elements has seven electrons in d-subshell?

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Zn

Co

Cu

Fe

The oxidation state of transition elements is usually

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Variable

Single

Constant

Infinite

No of unpaired electrons are maximum in

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V+3

Mn+2

Fe+3

Cr+3

Electrons in 5d energy level are filled up in case of

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Lanthanides

Transition metals

Actinides

Rare gases

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