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CHXII08:THE D- & F-BLOCK ELEMENTS

321461 The compounds formed when small atoms like $H, C$ and $N$ get trapped inside the crystal lattice of transition metals are known as

1 Complexes

2 Interstitial compounds

3 Clatherates

4 Alloys

CHXII08:THE D- & F-BLOCK ELEMENTS

321462 Which property from the following is NOT exhibited by interstitial compounds?

1 Their melting points are higher than pure metal

2 Their densities are less than parent metal.

3 Their chemical properties are different than parent metal.

4 These are hard and good conductors of heat and electricity.

MHTCET - 2021

CHXII08:THE D- & F-BLOCK ELEMENTS

321463 Which of the following is not an interstitial compound?

1

TiH

2

{Fe}_{2} O_{3}

3

{Mn}_{2} C_{3}

4

W_{2} C

Explanation:

${Fe}_{2} O_{3}$ is not a interstitial compound.

CHXII08:THE D- & F-BLOCK ELEMENTS

321464 How many unpaired electrons are present in a ${Fe}^{2 +}$ ion?

1 3

2 1

3 2

4 4

Explanation:

$_{26} Fe = [Ar] 3 d^{6} 4 s^{2}$
${Fe}^{2 +} = [Ar] 3 d^{6}$
supporting img
4 unpaired electrons are present in ${Fe}^{2 +}$ ion.

CHXII08:THE D- & F-BLOCK ELEMENTS

321465 Statement A :
Magnetic moment values of actinides are lesser than the theoretically predicted values.
Statement B :
Actinide elements are strongly paramagnetic.

1 Statement A is correct but Statement B is incorrect.

2 Statement A is incorrect but Statement B is correct.

3 Both statements are correct.

4 Both Statements are incorrect.

Explanation:

The magnetic moment is less as the $5 f$ electrons of actinides are less effectively shielded which results in quenching of orbital contribution, they are strongly paramagnetic due to presence of unpaired electrons

CHXII08:THE D- & F-BLOCK ELEMENTS

321461 The compounds formed when small atoms like $H, C$ and $N$ get trapped inside the crystal lattice of transition metals are known as

1 Complexes

2 Interstitial compounds

3 Clatherates

4 Alloys

CHXII08:THE D- & F-BLOCK ELEMENTS

321462 Which property from the following is NOT exhibited by interstitial compounds?

1 Their melting points are higher than pure metal

2 Their densities are less than parent metal.

3 Their chemical properties are different than parent metal.

4 These are hard and good conductors of heat and electricity.

MHTCET - 2021

CHXII08:THE D- & F-BLOCK ELEMENTS

321463 Which of the following is not an interstitial compound?

1

TiH

2

{Fe}_{2} O_{3}

3

{Mn}_{2} C_{3}

4

W_{2} C

Explanation:

${Fe}_{2} O_{3}$ is not a interstitial compound.

CHXII08:THE D- & F-BLOCK ELEMENTS

321464 How many unpaired electrons are present in a ${Fe}^{2 +}$ ion?

1 3

2 1

3 2

4 4

Explanation:

$_{26} Fe = [Ar] 3 d^{6} 4 s^{2}$
${Fe}^{2 +} = [Ar] 3 d^{6}$
supporting img
4 unpaired electrons are present in ${Fe}^{2 +}$ ion.

CHXII08:THE D- & F-BLOCK ELEMENTS

321465 Statement A :
Magnetic moment values of actinides are lesser than the theoretically predicted values.
Statement B :
Actinide elements are strongly paramagnetic.

1 Statement A is correct but Statement B is incorrect.

2 Statement A is incorrect but Statement B is correct.

3 Both statements are correct.

4 Both Statements are incorrect.

Explanation:

The magnetic moment is less as the $5 f$ electrons of actinides are less effectively shielded which results in quenching of orbital contribution, they are strongly paramagnetic due to presence of unpaired electrons

CHXII08:THE D- & F-BLOCK ELEMENTS

321461 The compounds formed when small atoms like $H, C$ and $N$ get trapped inside the crystal lattice of transition metals are known as

1 Complexes

2 Interstitial compounds

3 Clatherates

4 Alloys

CHXII08:THE D- & F-BLOCK ELEMENTS

321462 Which property from the following is NOT exhibited by interstitial compounds?

1 Their melting points are higher than pure metal

2 Their densities are less than parent metal.

3 Their chemical properties are different than parent metal.

4 These are hard and good conductors of heat and electricity.

MHTCET - 2021

CHXII08:THE D- & F-BLOCK ELEMENTS

321463 Which of the following is not an interstitial compound?

1

TiH

2

{Fe}_{2} O_{3}

3

{Mn}_{2} C_{3}

4

W_{2} C

Explanation:

${Fe}_{2} O_{3}$ is not a interstitial compound.

CHXII08:THE D- & F-BLOCK ELEMENTS

321464 How many unpaired electrons are present in a ${Fe}^{2 +}$ ion?

1 3

2 1

3 2

4 4

Explanation:

$_{26} Fe = [Ar] 3 d^{6} 4 s^{2}$
${Fe}^{2 +} = [Ar] 3 d^{6}$
supporting img
4 unpaired electrons are present in ${Fe}^{2 +}$ ion.

CHXII08:THE D- & F-BLOCK ELEMENTS

321465 Statement A :
Magnetic moment values of actinides are lesser than the theoretically predicted values.
Statement B :
Actinide elements are strongly paramagnetic.

1 Statement A is correct but Statement B is incorrect.

2 Statement A is incorrect but Statement B is correct.

3 Both statements are correct.

4 Both Statements are incorrect.

Explanation:

The magnetic moment is less as the $5 f$ electrons of actinides are less effectively shielded which results in quenching of orbital contribution, they are strongly paramagnetic due to presence of unpaired electrons

CHXII08:THE D- & F-BLOCK ELEMENTS

321461 The compounds formed when small atoms like $H, C$ and $N$ get trapped inside the crystal lattice of transition metals are known as

1 Complexes

2 Interstitial compounds

3 Clatherates

4 Alloys

CHXII08:THE D- & F-BLOCK ELEMENTS

321462 Which property from the following is NOT exhibited by interstitial compounds?

1 Their melting points are higher than pure metal

2 Their densities are less than parent metal.

3 Their chemical properties are different than parent metal.

4 These are hard and good conductors of heat and electricity.

MHTCET - 2021

CHXII08:THE D- & F-BLOCK ELEMENTS

321463 Which of the following is not an interstitial compound?

1

TiH

2

{Fe}_{2} O_{3}

3

{Mn}_{2} C_{3}

4

W_{2} C

Explanation:

${Fe}_{2} O_{3}$ is not a interstitial compound.

CHXII08:THE D- & F-BLOCK ELEMENTS

321464 How many unpaired electrons are present in a ${Fe}^{2 +}$ ion?

1 3

2 1

3 2

4 4

Explanation:

$_{26} Fe = [Ar] 3 d^{6} 4 s^{2}$
${Fe}^{2 +} = [Ar] 3 d^{6}$
supporting img
4 unpaired electrons are present in ${Fe}^{2 +}$ ion.

CHXII08:THE D- & F-BLOCK ELEMENTS

321465 Statement A :
Magnetic moment values of actinides are lesser than the theoretically predicted values.
Statement B :
Actinide elements are strongly paramagnetic.

1 Statement A is correct but Statement B is incorrect.

2 Statement A is incorrect but Statement B is correct.

3 Both statements are correct.

4 Both Statements are incorrect.

Explanation:

The magnetic moment is less as the $5 f$ electrons of actinides are less effectively shielded which results in quenching of orbital contribution, they are strongly paramagnetic due to presence of unpaired electrons

CHXII08:THE D- & F-BLOCK ELEMENTS

321461 The compounds formed when small atoms like $H, C$ and $N$ get trapped inside the crystal lattice of transition metals are known as

1 Complexes

2 Interstitial compounds

3 Clatherates

4 Alloys

CHXII08:THE D- & F-BLOCK ELEMENTS

321462 Which property from the following is NOT exhibited by interstitial compounds?

1 Their melting points are higher than pure metal

2 Their densities are less than parent metal.

3 Their chemical properties are different than parent metal.

4 These are hard and good conductors of heat and electricity.

MHTCET - 2021

CHXII08:THE D- & F-BLOCK ELEMENTS

321463 Which of the following is not an interstitial compound?

1

TiH

2

{Fe}_{2} O_{3}

3

{Mn}_{2} C_{3}

4

W_{2} C

Explanation:

${Fe}_{2} O_{3}$ is not a interstitial compound.

CHXII08:THE D- & F-BLOCK ELEMENTS

321464 How many unpaired electrons are present in a ${Fe}^{2 +}$ ion?

1 3

2 1

3 2

4 4

Explanation:

$_{26} Fe = [Ar] 3 d^{6} 4 s^{2}$
${Fe}^{2 +} = [Ar] 3 d^{6}$
supporting img
4 unpaired electrons are present in ${Fe}^{2 +}$ ion.

CHXII08:THE D- & F-BLOCK ELEMENTS

321465 Statement A :
Magnetic moment values of actinides are lesser than the theoretically predicted values.
Statement B :
Actinide elements are strongly paramagnetic.

1 Statement A is correct but Statement B is incorrect.

2 Statement A is incorrect but Statement B is correct.

3 Both statements are correct.

4 Both Statements are incorrect.

Explanation:

The magnetic moment is less as the $5 f$ electrons of actinides are less effectively shielded which results in quenching of orbital contribution, they are strongly paramagnetic due to presence of unpaired electrons

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