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CHXI11:THE P-BLOCK ELEMENTS

316629 The highest industrial consumption of molecular hydrogen to produce compounds of element:

1 Carbon

2 Nitrogen

3 Oxygen

4 Chlorine

JEE - 2022

CHXI11:THE P-BLOCK ELEMENTS

316630 Assertion :
$H_{2} S$ is stronger acid than ${PH}_{3}$
Reason :
$S$ is more electronegative than $P$ , conjugate base ${HS}^{-}$ is more stable than $H_{2} P^{-}$ .

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.

2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.

3 Assertion is correct but Reason is incorrect.

4 Assertion is incorrect but Reason is correct.

Explanation:

$H_{2} S_{(g)} + aq \to {HS}_{(aq)}^{-} + H_{(aq)}^{+}$
${PH}_{3 (g)} + aq \to H_{2} P_{(aq)}^{-} + H_{(aq)}^{+}$
As $S$ is more electronegative than $P$ , conjugate base ${HS}^{-}$ is more stable than $H_{2} P^{-}$ . Hence, $H_{2} S$ is stronger acid than ${PH}_{3}$ . So option (1) is correct.

CHXI11:THE P-BLOCK ELEMENTS

316631 Central atom is $s p^{3} d$ -hybridised in

1

P C l_{5}, B r F_{3}, X e F_{2}

2

{P C l}_{6}^{-}, {P C l}_{4}^{+}, X e F_{2}

3

X e F_{2}, X e O_{3}, X e O F_{4}

4

P C l_{5}, P C l_{3}, X e O_{3}

Explanation:

$P C l_{5}, s p^{3} d$ - hybridised $P$ , no lone pair $B r F_{3}, s p^{3} d$ - hybridised $Br$ , two lone pairs $X e F_{2}, s p^{3} d$ - hybridised Xe, three lone pairs

CHXI11:THE P-BLOCK ELEMENTS

316632 Assertion :
Moelcular nitrogen is less reactive than molecular oxygen.
Reason :
The bond length of $N_{2}$ is shorter than that of oxygen.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.

2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.

3 Assertion is correct but Reason is incorrect.

4 Both Assertion and Reason are incorrect.

Explanation:

$N_{2}$ is less reactive than that of $O_{2}$ because nitrogen has high dissociation energy in comparison to oxygen so, its reactivity is less. Also, bond length of nitrogen is shroter than oxygen because of presence of triple bond between nitrogen atoms. Hence, both Assertion and Reason are correct and Reason is the correct explanation of Assertion.

AIIMS - 2006

CHXI11:THE P-BLOCK ELEMENTS

316629 The highest industrial consumption of molecular hydrogen to produce compounds of element:

1 Carbon

2 Nitrogen

3 Oxygen

4 Chlorine

JEE - 2022

CHXI11:THE P-BLOCK ELEMENTS

316630 Assertion :
$H_{2} S$ is stronger acid than ${PH}_{3}$
Reason :
$S$ is more electronegative than $P$ , conjugate base ${HS}^{-}$ is more stable than $H_{2} P^{-}$ .

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.

2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.

3 Assertion is correct but Reason is incorrect.

4 Assertion is incorrect but Reason is correct.

Explanation:

$H_{2} S_{(g)} + aq \to {HS}_{(aq)}^{-} + H_{(aq)}^{+}$
${PH}_{3 (g)} + aq \to H_{2} P_{(aq)}^{-} + H_{(aq)}^{+}$
As $S$ is more electronegative than $P$ , conjugate base ${HS}^{-}$ is more stable than $H_{2} P^{-}$ . Hence, $H_{2} S$ is stronger acid than ${PH}_{3}$ . So option (1) is correct.

CHXI11:THE P-BLOCK ELEMENTS

316631 Central atom is $s p^{3} d$ -hybridised in

1

P C l_{5}, B r F_{3}, X e F_{2}

2

{P C l}_{6}^{-}, {P C l}_{4}^{+}, X e F_{2}

3

X e F_{2}, X e O_{3}, X e O F_{4}

4

P C l_{5}, P C l_{3}, X e O_{3}

Explanation:

$P C l_{5}, s p^{3} d$ - hybridised $P$ , no lone pair $B r F_{3}, s p^{3} d$ - hybridised $Br$ , two lone pairs $X e F_{2}, s p^{3} d$ - hybridised Xe, three lone pairs

CHXI11:THE P-BLOCK ELEMENTS

316632 Assertion :
Moelcular nitrogen is less reactive than molecular oxygen.
Reason :
The bond length of $N_{2}$ is shorter than that of oxygen.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.

2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.

3 Assertion is correct but Reason is incorrect.

4 Both Assertion and Reason are incorrect.

Explanation:

$N_{2}$ is less reactive than that of $O_{2}$ because nitrogen has high dissociation energy in comparison to oxygen so, its reactivity is less. Also, bond length of nitrogen is shroter than oxygen because of presence of triple bond between nitrogen atoms. Hence, both Assertion and Reason are correct and Reason is the correct explanation of Assertion.

AIIMS - 2006

CHXI11:THE P-BLOCK ELEMENTS

316629 The highest industrial consumption of molecular hydrogen to produce compounds of element:

1 Carbon

2 Nitrogen

3 Oxygen

4 Chlorine

JEE - 2022

CHXI11:THE P-BLOCK ELEMENTS

316630 Assertion :
$H_{2} S$ is stronger acid than ${PH}_{3}$
Reason :
$S$ is more electronegative than $P$ , conjugate base ${HS}^{-}$ is more stable than $H_{2} P^{-}$ .

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.

2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.

3 Assertion is correct but Reason is incorrect.

4 Assertion is incorrect but Reason is correct.

Explanation:

$H_{2} S_{(g)} + aq \to {HS}_{(aq)}^{-} + H_{(aq)}^{+}$
${PH}_{3 (g)} + aq \to H_{2} P_{(aq)}^{-} + H_{(aq)}^{+}$
As $S$ is more electronegative than $P$ , conjugate base ${HS}^{-}$ is more stable than $H_{2} P^{-}$ . Hence, $H_{2} S$ is stronger acid than ${PH}_{3}$ . So option (1) is correct.

CHXI11:THE P-BLOCK ELEMENTS

316631 Central atom is $s p^{3} d$ -hybridised in

1

P C l_{5}, B r F_{3}, X e F_{2}

2

{P C l}_{6}^{-}, {P C l}_{4}^{+}, X e F_{2}

3

X e F_{2}, X e O_{3}, X e O F_{4}

4

P C l_{5}, P C l_{3}, X e O_{3}

Explanation:

$P C l_{5}, s p^{3} d$ - hybridised $P$ , no lone pair $B r F_{3}, s p^{3} d$ - hybridised $Br$ , two lone pairs $X e F_{2}, s p^{3} d$ - hybridised Xe, three lone pairs

CHXI11:THE P-BLOCK ELEMENTS

316632 Assertion :
Moelcular nitrogen is less reactive than molecular oxygen.
Reason :
The bond length of $N_{2}$ is shorter than that of oxygen.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.

2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.

3 Assertion is correct but Reason is incorrect.

4 Both Assertion and Reason are incorrect.

Explanation:

$N_{2}$ is less reactive than that of $O_{2}$ because nitrogen has high dissociation energy in comparison to oxygen so, its reactivity is less. Also, bond length of nitrogen is shroter than oxygen because of presence of triple bond between nitrogen atoms. Hence, both Assertion and Reason are correct and Reason is the correct explanation of Assertion.

AIIMS - 2006

CHXI11:THE P-BLOCK ELEMENTS

316629 The highest industrial consumption of molecular hydrogen to produce compounds of element:

1 Carbon

2 Nitrogen

3 Oxygen

4 Chlorine

JEE - 2022

CHXI11:THE P-BLOCK ELEMENTS

316630 Assertion :
$H_{2} S$ is stronger acid than ${PH}_{3}$
Reason :
$S$ is more electronegative than $P$ , conjugate base ${HS}^{-}$ is more stable than $H_{2} P^{-}$ .

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.

2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.

3 Assertion is correct but Reason is incorrect.

4 Assertion is incorrect but Reason is correct.

Explanation:

$H_{2} S_{(g)} + aq \to {HS}_{(aq)}^{-} + H_{(aq)}^{+}$
${PH}_{3 (g)} + aq \to H_{2} P_{(aq)}^{-} + H_{(aq)}^{+}$
As $S$ is more electronegative than $P$ , conjugate base ${HS}^{-}$ is more stable than $H_{2} P^{-}$ . Hence, $H_{2} S$ is stronger acid than ${PH}_{3}$ . So option (1) is correct.

CHXI11:THE P-BLOCK ELEMENTS

316631 Central atom is $s p^{3} d$ -hybridised in

1

P C l_{5}, B r F_{3}, X e F_{2}

2

{P C l}_{6}^{-}, {P C l}_{4}^{+}, X e F_{2}

3

X e F_{2}, X e O_{3}, X e O F_{4}

4

P C l_{5}, P C l_{3}, X e O_{3}

Explanation:

$P C l_{5}, s p^{3} d$ - hybridised $P$ , no lone pair $B r F_{3}, s p^{3} d$ - hybridised $Br$ , two lone pairs $X e F_{2}, s p^{3} d$ - hybridised Xe, three lone pairs

CHXI11:THE P-BLOCK ELEMENTS

316632 Assertion :
Moelcular nitrogen is less reactive than molecular oxygen.
Reason :
The bond length of $N_{2}$ is shorter than that of oxygen.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.

2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.

3 Assertion is correct but Reason is incorrect.

4 Both Assertion and Reason are incorrect.

Explanation:

$N_{2}$ is less reactive than that of $O_{2}$ because nitrogen has high dissociation energy in comparison to oxygen so, its reactivity is less. Also, bond length of nitrogen is shroter than oxygen because of presence of triple bond between nitrogen atoms. Hence, both Assertion and Reason are correct and Reason is the correct explanation of Assertion.

AIIMS - 2006

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