QBManager

CHXI11:THE P-BLOCK ELEMENTS

316242 The correct order of decreasing stability of hexafluorides of group 16 members is

1

{SF}_{6} > {SeF}_{6} > {TeF}_{6}

2

{TeF}_{6} > {SeF}_{6} > {SF}_{6}

3

{SF}_{6} > {TeF}_{6} > {SeF}_{6}

4

{TeF}_{6} > {SF}_{6} > {SeF}_{6}

CHXI11:THE P-BLOCK ELEMENTS

316243 Assertion :
${SeCl}_{4}$ does not have tetrahedral structure.
Reason :
$Se$ in ${SeCl}_{4}$ has two lone pairs.

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:

$Se$ in ${SeCl}_{4}$ has 4 bond pairs and one lone pair, So, the option (3) is correct.

CHXI11:THE P-BLOCK ELEMENTS

316244 Assertion :
${OF}_{2}$ is named as oxygen difluoride.
Reason :
In ${OF}_{2}$ , oxygen is less electronegative than fluorine.

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.

CHXI11:THE P-BLOCK ELEMENTS

316245 Given below are two statements.
choose the correct answer from the options given below:
Statement A :
: The boiling point of hydrides of Group 16 elements follow the order
$H_{2} O > H_{2} T e > H_{2} S e > H_{2} S .$
Statement B :
On the basis of molecular mass, $H_{2} O$ is expected to have lower boiling point than the other members of the group but due to the presence of extensive H -bonding in $H_{2} O$ , it has higher boiling point.

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:

Boiling points of hydrides of group 16 follow the order $H_{2} O > H_{2} Te > H_{2} Se > H_{2} S$ .
Due to intermolecular H -bonding $H_{2} O$ shows higher boiling point than respective hydrides of group 16 .
So both statements are true.

NEET - 2024

CHXI11:THE P-BLOCK ELEMENTS

316242 The correct order of decreasing stability of hexafluorides of group 16 members is

1

{SF}_{6} > {SeF}_{6} > {TeF}_{6}

2

{TeF}_{6} > {SeF}_{6} > {SF}_{6}

3

{SF}_{6} > {TeF}_{6} > {SeF}_{6}

4

{TeF}_{6} > {SF}_{6} > {SeF}_{6}

CHXI11:THE P-BLOCK ELEMENTS

316243 Assertion :
${SeCl}_{4}$ does not have tetrahedral structure.
Reason :
$Se$ in ${SeCl}_{4}$ has two lone pairs.

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:

$Se$ in ${SeCl}_{4}$ has 4 bond pairs and one lone pair, So, the option (3) is correct.

CHXI11:THE P-BLOCK ELEMENTS

316244 Assertion :
${OF}_{2}$ is named as oxygen difluoride.
Reason :
In ${OF}_{2}$ , oxygen is less electronegative than fluorine.

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.

CHXI11:THE P-BLOCK ELEMENTS

316245 Given below are two statements.
choose the correct answer from the options given below:
Statement A :
: The boiling point of hydrides of Group 16 elements follow the order
$H_{2} O > H_{2} T e > H_{2} S e > H_{2} S .$
Statement B :
On the basis of molecular mass, $H_{2} O$ is expected to have lower boiling point than the other members of the group but due to the presence of extensive H -bonding in $H_{2} O$ , it has higher boiling point.

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:

Boiling points of hydrides of group 16 follow the order $H_{2} O > H_{2} Te > H_{2} Se > H_{2} S$ .
Due to intermolecular H -bonding $H_{2} O$ shows higher boiling point than respective hydrides of group 16 .
So both statements are true.

NEET - 2024

CHXI11:THE P-BLOCK ELEMENTS

316242 The correct order of decreasing stability of hexafluorides of group 16 members is

1

{SF}_{6} > {SeF}_{6} > {TeF}_{6}

2

{TeF}_{6} > {SeF}_{6} > {SF}_{6}

3

{SF}_{6} > {TeF}_{6} > {SeF}_{6}

4

{TeF}_{6} > {SF}_{6} > {SeF}_{6}

CHXI11:THE P-BLOCK ELEMENTS

316243 Assertion :
${SeCl}_{4}$ does not have tetrahedral structure.
Reason :
$Se$ in ${SeCl}_{4}$ has two lone pairs.

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:

$Se$ in ${SeCl}_{4}$ has 4 bond pairs and one lone pair, So, the option (3) is correct.

CHXI11:THE P-BLOCK ELEMENTS

316244 Assertion :
${OF}_{2}$ is named as oxygen difluoride.
Reason :
In ${OF}_{2}$ , oxygen is less electronegative than fluorine.

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.

CHXI11:THE P-BLOCK ELEMENTS

316245 Given below are two statements.
choose the correct answer from the options given below:
Statement A :
: The boiling point of hydrides of Group 16 elements follow the order
$H_{2} O > H_{2} T e > H_{2} S e > H_{2} S .$
Statement B :
On the basis of molecular mass, $H_{2} O$ is expected to have lower boiling point than the other members of the group but due to the presence of extensive H -bonding in $H_{2} O$ , it has higher boiling point.

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:

Boiling points of hydrides of group 16 follow the order $H_{2} O > H_{2} Te > H_{2} Se > H_{2} S$ .
Due to intermolecular H -bonding $H_{2} O$ shows higher boiling point than respective hydrides of group 16 .
So both statements are true.

NEET - 2024

CHXI11:THE P-BLOCK ELEMENTS

316242 The correct order of decreasing stability of hexafluorides of group 16 members is

1

{SF}_{6} > {SeF}_{6} > {TeF}_{6}

2

{TeF}_{6} > {SeF}_{6} > {SF}_{6}

3

{SF}_{6} > {TeF}_{6} > {SeF}_{6}

4

{TeF}_{6} > {SF}_{6} > {SeF}_{6}

CHXI11:THE P-BLOCK ELEMENTS

316243 Assertion :
${SeCl}_{4}$ does not have tetrahedral structure.
Reason :
$Se$ in ${SeCl}_{4}$ has two lone pairs.

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:

$Se$ in ${SeCl}_{4}$ has 4 bond pairs and one lone pair, So, the option (3) is correct.

CHXI11:THE P-BLOCK ELEMENTS

316244 Assertion :
${OF}_{2}$ is named as oxygen difluoride.
Reason :
In ${OF}_{2}$ , oxygen is less electronegative than fluorine.

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.

CHXI11:THE P-BLOCK ELEMENTS

316245 Given below are two statements.
choose the correct answer from the options given below:
Statement A :
: The boiling point of hydrides of Group 16 elements follow the order
$H_{2} O > H_{2} T e > H_{2} S e > H_{2} S .$
Statement B :
On the basis of molecular mass, $H_{2} O$ is expected to have lower boiling point than the other members of the group but due to the presence of extensive H -bonding in $H_{2} O$ , it has higher boiling point.

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:

Boiling points of hydrides of group 16 follow the order $H_{2} O > H_{2} Te > H_{2} Se > H_{2} S$ .
Due to intermolecular H -bonding $H_{2} O$ shows higher boiling point than respective hydrides of group 16 .
So both statements are true.

NEET - 2024