Chemical Properties and General Characteristics of Group – 13 Elements
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CHXI11:THE P-BLOCK ELEMENTS

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

1 \(\mathrm{SF}_{6}>\mathrm{SeF}_{6}>\mathrm{TeF}_{6}\)
2 \(\mathrm{TeF}_{6}>\mathrm{SeF}_{6}>\mathrm{SF}_{6}\)
3 \(\mathrm{SF}_{6}>\mathrm{TeF}_{6}>\mathrm{SeF}_{6}\)
4 \(\mathrm{TeF}_{6}>\mathrm{SF}_{6}>\mathrm{SeF}_{6}\)
CHXI11:THE P-BLOCK ELEMENTS

316243 Assertion :
\(\mathrm{SeCl}_{4}\) does not have tetrahedral structure.
Reason :
\(\mathrm{Se}\) in \(\mathrm{SeCl}_{4}\) 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.
CHXI11:THE P-BLOCK ELEMENTS

316244 Assertion :
\(\mathrm{OF}_{2}\) is named as oxygen difluoride.
Reason :
In \(\mathrm{OF}_{2}\), 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
\({{\rm{H}}_{\rm{2}}}{\rm{O}}\,{\rm{ > }}\,{{\rm{H}}_{\rm{2}}}{\rm{Te}}\,{\rm{ > }}\,{{\rm{H}}_{\rm{2}}}{\rm{Se}}\,{\rm{ > }}\,{{\rm{H}}_{\rm{2}}}{\rm{\;S}}{\rm{.}}\)
Statement B :
On the basis of molecular mass, \({\mathrm{\mathrm{H}_{2} \mathrm{O}}}\) is expected to have lower boiling point than the other members of the group but due to the presence of extensive H -bonding in \({\mathrm{\mathrm{H}_{2} \mathrm{O}}}\), 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.
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CHXI11:THE P-BLOCK ELEMENTS

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

1 \(\mathrm{SF}_{6}>\mathrm{SeF}_{6}>\mathrm{TeF}_{6}\)
2 \(\mathrm{TeF}_{6}>\mathrm{SeF}_{6}>\mathrm{SF}_{6}\)
3 \(\mathrm{SF}_{6}>\mathrm{TeF}_{6}>\mathrm{SeF}_{6}\)
4 \(\mathrm{TeF}_{6}>\mathrm{SF}_{6}>\mathrm{SeF}_{6}\)
CHXI11:THE P-BLOCK ELEMENTS

316243 Assertion :
\(\mathrm{SeCl}_{4}\) does not have tetrahedral structure.
Reason :
\(\mathrm{Se}\) in \(\mathrm{SeCl}_{4}\) 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.
CHXI11:THE P-BLOCK ELEMENTS

316244 Assertion :
\(\mathrm{OF}_{2}\) is named as oxygen difluoride.
Reason :
In \(\mathrm{OF}_{2}\), 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
\({{\rm{H}}_{\rm{2}}}{\rm{O}}\,{\rm{ > }}\,{{\rm{H}}_{\rm{2}}}{\rm{Te}}\,{\rm{ > }}\,{{\rm{H}}_{\rm{2}}}{\rm{Se}}\,{\rm{ > }}\,{{\rm{H}}_{\rm{2}}}{\rm{\;S}}{\rm{.}}\)
Statement B :
On the basis of molecular mass, \({\mathrm{\mathrm{H}_{2} \mathrm{O}}}\) is expected to have lower boiling point than the other members of the group but due to the presence of extensive H -bonding in \({\mathrm{\mathrm{H}_{2} \mathrm{O}}}\), 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.
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CHXI11:THE P-BLOCK ELEMENTS

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

1 \(\mathrm{SF}_{6}>\mathrm{SeF}_{6}>\mathrm{TeF}_{6}\)
2 \(\mathrm{TeF}_{6}>\mathrm{SeF}_{6}>\mathrm{SF}_{6}\)
3 \(\mathrm{SF}_{6}>\mathrm{TeF}_{6}>\mathrm{SeF}_{6}\)
4 \(\mathrm{TeF}_{6}>\mathrm{SF}_{6}>\mathrm{SeF}_{6}\)
CHXI11:THE P-BLOCK ELEMENTS

316243 Assertion :
\(\mathrm{SeCl}_{4}\) does not have tetrahedral structure.
Reason :
\(\mathrm{Se}\) in \(\mathrm{SeCl}_{4}\) 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.
CHXI11:THE P-BLOCK ELEMENTS

316244 Assertion :
\(\mathrm{OF}_{2}\) is named as oxygen difluoride.
Reason :
In \(\mathrm{OF}_{2}\), 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
\({{\rm{H}}_{\rm{2}}}{\rm{O}}\,{\rm{ > }}\,{{\rm{H}}_{\rm{2}}}{\rm{Te}}\,{\rm{ > }}\,{{\rm{H}}_{\rm{2}}}{\rm{Se}}\,{\rm{ > }}\,{{\rm{H}}_{\rm{2}}}{\rm{\;S}}{\rm{.}}\)
Statement B :
On the basis of molecular mass, \({\mathrm{\mathrm{H}_{2} \mathrm{O}}}\) is expected to have lower boiling point than the other members of the group but due to the presence of extensive H -bonding in \({\mathrm{\mathrm{H}_{2} \mathrm{O}}}\), 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.
NEET - 2024
NEET DIGITAL LIBRARY
CHXI11:THE P-BLOCK ELEMENTS

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

1 \(\mathrm{SF}_{6}>\mathrm{SeF}_{6}>\mathrm{TeF}_{6}\)
2 \(\mathrm{TeF}_{6}>\mathrm{SeF}_{6}>\mathrm{SF}_{6}\)
3 \(\mathrm{SF}_{6}>\mathrm{TeF}_{6}>\mathrm{SeF}_{6}\)
4 \(\mathrm{TeF}_{6}>\mathrm{SF}_{6}>\mathrm{SeF}_{6}\)
CHXI11:THE P-BLOCK ELEMENTS

316243 Assertion :
\(\mathrm{SeCl}_{4}\) does not have tetrahedral structure.
Reason :
\(\mathrm{Se}\) in \(\mathrm{SeCl}_{4}\) 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.
CHXI11:THE P-BLOCK ELEMENTS

316244 Assertion :
\(\mathrm{OF}_{2}\) is named as oxygen difluoride.
Reason :
In \(\mathrm{OF}_{2}\), 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
\({{\rm{H}}_{\rm{2}}}{\rm{O}}\,{\rm{ > }}\,{{\rm{H}}_{\rm{2}}}{\rm{Te}}\,{\rm{ > }}\,{{\rm{H}}_{\rm{2}}}{\rm{Se}}\,{\rm{ > }}\,{{\rm{H}}_{\rm{2}}}{\rm{\;S}}{\rm{.}}\)
Statement B :
On the basis of molecular mass, \({\mathrm{\mathrm{H}_{2} \mathrm{O}}}\) is expected to have lower boiling point than the other members of the group but due to the presence of extensive H -bonding in \({\mathrm{\mathrm{H}_{2} \mathrm{O}}}\), 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.
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