Introduction to Group 13 Elements
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CHXI11:THE P-BLOCK ELEMENTS

316491 Which of the following is a least stable compound?

1 \(\mathrm{BCl}_{3}\)
2 \(\mathrm{GaCl}_{3}\)
3 \(\mathrm{InCl}_{3}\)
4 \(\mathrm{TlCl}_{3}\)
CHXI11:THE P-BLOCK ELEMENTS

316492 The stability of +1 oxidation state increases in the sequence

1 \(\mathrm{Ga} < \) In \( < \mathrm{Al} < \mathrm{Tl}\)
2 \(\mathrm{Al} < \mathrm{Ga} < \) In \( < \mathrm{Tl}\)
3 \(\mathrm{Tl} < \) In \( < \mathrm{Ga} < \mathrm{Al}\)
4 In \( < \mathrm{Tl} < \mathrm{Ga} < \mathrm{Al}\)
CHXI11:THE P-BLOCK ELEMENTS

316493 Group 13 elements exhibit

1 Only +3 oxidation state
2 Only +1 oxidation state
3 Both +1 and +3 oxidation states
4 \(+1,+2\) and +3 oxidation states
CHXI11:THE P-BLOCK ELEMENTS

316494 Assertion :
\({\text{T}}{{\text{l}}^{{\text{3 + }}}}\) acts as an oxidising agent.
Reason :
Due to inert pair effect, \(\mathrm{Tl}^{+}\) is less stable than \({\text{T}}{{\text{l}}^{{\text{3 + }}}}\)

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

316495 Statement A :
On moving down the group-13, inert pair effect increases.
Statement B :
On moving down the group, there is poor shielding effect of intervening \({\text{d}}\) and \({\text{f}}\) orbitals. Due to this, the effective nuclear charge increases which holds \(n s\)-electrons tightly.

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 DIGITAL LIBRARY
CHXI11:THE P-BLOCK ELEMENTS

316491 Which of the following is a least stable compound?

1 \(\mathrm{BCl}_{3}\)
2 \(\mathrm{GaCl}_{3}\)
3 \(\mathrm{InCl}_{3}\)
4 \(\mathrm{TlCl}_{3}\)
CHXI11:THE P-BLOCK ELEMENTS

316492 The stability of +1 oxidation state increases in the sequence

1 \(\mathrm{Ga} < \) In \( < \mathrm{Al} < \mathrm{Tl}\)
2 \(\mathrm{Al} < \mathrm{Ga} < \) In \( < \mathrm{Tl}\)
3 \(\mathrm{Tl} < \) In \( < \mathrm{Ga} < \mathrm{Al}\)
4 In \( < \mathrm{Tl} < \mathrm{Ga} < \mathrm{Al}\)
CHXI11:THE P-BLOCK ELEMENTS

316493 Group 13 elements exhibit

1 Only +3 oxidation state
2 Only +1 oxidation state
3 Both +1 and +3 oxidation states
4 \(+1,+2\) and +3 oxidation states
CHXI11:THE P-BLOCK ELEMENTS

316494 Assertion :
\({\text{T}}{{\text{l}}^{{\text{3 + }}}}\) acts as an oxidising agent.
Reason :
Due to inert pair effect, \(\mathrm{Tl}^{+}\) is less stable than \({\text{T}}{{\text{l}}^{{\text{3 + }}}}\)

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

316495 Statement A :
On moving down the group-13, inert pair effect increases.
Statement B :
On moving down the group, there is poor shielding effect of intervening \({\text{d}}\) and \({\text{f}}\) orbitals. Due to this, the effective nuclear charge increases which holds \(n s\)-electrons tightly.

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

316491 Which of the following is a least stable compound?

1 \(\mathrm{BCl}_{3}\)
2 \(\mathrm{GaCl}_{3}\)
3 \(\mathrm{InCl}_{3}\)
4 \(\mathrm{TlCl}_{3}\)
CHXI11:THE P-BLOCK ELEMENTS

316492 The stability of +1 oxidation state increases in the sequence

1 \(\mathrm{Ga} < \) In \( < \mathrm{Al} < \mathrm{Tl}\)
2 \(\mathrm{Al} < \mathrm{Ga} < \) In \( < \mathrm{Tl}\)
3 \(\mathrm{Tl} < \) In \( < \mathrm{Ga} < \mathrm{Al}\)
4 In \( < \mathrm{Tl} < \mathrm{Ga} < \mathrm{Al}\)
CHXI11:THE P-BLOCK ELEMENTS

316493 Group 13 elements exhibit

1 Only +3 oxidation state
2 Only +1 oxidation state
3 Both +1 and +3 oxidation states
4 \(+1,+2\) and +3 oxidation states
CHXI11:THE P-BLOCK ELEMENTS

316494 Assertion :
\({\text{T}}{{\text{l}}^{{\text{3 + }}}}\) acts as an oxidising agent.
Reason :
Due to inert pair effect, \(\mathrm{Tl}^{+}\) is less stable than \({\text{T}}{{\text{l}}^{{\text{3 + }}}}\)

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

316495 Statement A :
On moving down the group-13, inert pair effect increases.
Statement B :
On moving down the group, there is poor shielding effect of intervening \({\text{d}}\) and \({\text{f}}\) orbitals. Due to this, the effective nuclear charge increases which holds \(n s\)-electrons tightly.

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

316491 Which of the following is a least stable compound?

1 \(\mathrm{BCl}_{3}\)
2 \(\mathrm{GaCl}_{3}\)
3 \(\mathrm{InCl}_{3}\)
4 \(\mathrm{TlCl}_{3}\)
CHXI11:THE P-BLOCK ELEMENTS

316492 The stability of +1 oxidation state increases in the sequence

1 \(\mathrm{Ga} < \) In \( < \mathrm{Al} < \mathrm{Tl}\)
2 \(\mathrm{Al} < \mathrm{Ga} < \) In \( < \mathrm{Tl}\)
3 \(\mathrm{Tl} < \) In \( < \mathrm{Ga} < \mathrm{Al}\)
4 In \( < \mathrm{Tl} < \mathrm{Ga} < \mathrm{Al}\)
CHXI11:THE P-BLOCK ELEMENTS

316493 Group 13 elements exhibit

1 Only +3 oxidation state
2 Only +1 oxidation state
3 Both +1 and +3 oxidation states
4 \(+1,+2\) and +3 oxidation states
CHXI11:THE P-BLOCK ELEMENTS

316494 Assertion :
\({\text{T}}{{\text{l}}^{{\text{3 + }}}}\) acts as an oxidising agent.
Reason :
Due to inert pair effect, \(\mathrm{Tl}^{+}\) is less stable than \({\text{T}}{{\text{l}}^{{\text{3 + }}}}\)

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

316495 Statement A :
On moving down the group-13, inert pair effect increases.
Statement B :
On moving down the group, there is poor shielding effect of intervening \({\text{d}}\) and \({\text{f}}\) orbitals. Due to this, the effective nuclear charge increases which holds \(n s\)-electrons tightly.

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 DIGITAL LIBRARY
CHXI11:THE P-BLOCK ELEMENTS

316491 Which of the following is a least stable compound?

1 \(\mathrm{BCl}_{3}\)
2 \(\mathrm{GaCl}_{3}\)
3 \(\mathrm{InCl}_{3}\)
4 \(\mathrm{TlCl}_{3}\)
CHXI11:THE P-BLOCK ELEMENTS

316492 The stability of +1 oxidation state increases in the sequence

1 \(\mathrm{Ga} < \) In \( < \mathrm{Al} < \mathrm{Tl}\)
2 \(\mathrm{Al} < \mathrm{Ga} < \) In \( < \mathrm{Tl}\)
3 \(\mathrm{Tl} < \) In \( < \mathrm{Ga} < \mathrm{Al}\)
4 In \( < \mathrm{Tl} < \mathrm{Ga} < \mathrm{Al}\)
CHXI11:THE P-BLOCK ELEMENTS

316493 Group 13 elements exhibit

1 Only +3 oxidation state
2 Only +1 oxidation state
3 Both +1 and +3 oxidation states
4 \(+1,+2\) and +3 oxidation states
CHXI11:THE P-BLOCK ELEMENTS

316494 Assertion :
\({\text{T}}{{\text{l}}^{{\text{3 + }}}}\) acts as an oxidising agent.
Reason :
Due to inert pair effect, \(\mathrm{Tl}^{+}\) is less stable than \({\text{T}}{{\text{l}}^{{\text{3 + }}}}\)

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

316495 Statement A :
On moving down the group-13, inert pair effect increases.
Statement B :
On moving down the group, there is poor shielding effect of intervening \({\text{d}}\) and \({\text{f}}\) orbitals. Due to this, the effective nuclear charge increases which holds \(n s\)-electrons tightly.

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.