316687
The incorrect statement among the following is
1 \({\text{T}}{{\text{l}}^{{\text{3 + }}}}\) is unstable in solution and acts as strong oxidizing agent.
2 In \(\left[\mathrm{Al}(\mathrm{OH})_{4}\right]^{-}\)ion, \({\text{Al}}\,\,{\text{is}}\,\,{\text{s}}{{\text{p}}^{\text{3}}}\) hybridised.
3 In \(\left[\mathrm{Al}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{3+}\) ion, \({\text{Al}}\,\,{\text{is}}\,\,{\text{s}}{{\text{p}}^{\text{3}}}{{\text{d}}^{\text{2}}}\) hybridised.
4 Both Boron and \(\mathrm{Al}\) form \({\left[ {{\text{M}}{{\text{F}}_{\text{6}}}} \right]^{{\text{3 - }}}}\) ion.
Explanation:
Conceptual Questions
CHXI11:THE P-BLOCK ELEMENTS
316688
For making good quality mirrors, plates of float glass are used. These are obtained by floating molten glass over a liquid metal which does not solidify before glass. The metal used can be
1 tin
2 sodium
3 magnesium
4 mercury
Explanation:
It is mercury, because mercury exists as liquid at room temperature.
CHXI11:THE P-BLOCK ELEMENTS
316689
For compound having the formula \(\mathrm{GaAlCl}_{4}\), the correct option from the following is
1 Ga is more electronegative than Al and is present as a cationic part of the salt \({\rm{GaAlC}}{{\rm{l}}_4}\)
2 Oxidation state of Ga in the salt \({\rm{GaAlC}}{{\rm{l}}_4}\) is +3
3 Ga is coordinated with Cl in \(\mathrm{GaAlCl}_{4}\).
4 Cl forms bond with both Al and Ga in \(\mathrm{GaAlCl}_{4}\)
Ga is cationic part of salt \(\mathrm{GaAlCl}_{4}\). Electronegativity of Al and Ga respectively are 1.61 and 1.81 .
JEE - 2023
CHXI11:THE P-BLOCK ELEMENTS
316690
Identify the wrong statement
1 Aluminium forms \(\left[\mathrm{AlF}_{6}\right]^{3-}\) but boron does not form \({\left[ {{\text{B}}{{\text{F}}_{\text{6}}}} \right]^{{\text{3 - }}}}\) ion
2 \(\mathrm{BCl}_{3}\) exists as monomer but \(\mathrm{AlCl}_{3}\) forms a dimer
3 \(\mathrm{BF}_{3}\) is a weak Lewis acid than \(\mathrm{BCl}_{3}\)
4 For thallium, +3 oxidation state is more stable than +1 .
316687
The incorrect statement among the following is
1 \({\text{T}}{{\text{l}}^{{\text{3 + }}}}\) is unstable in solution and acts as strong oxidizing agent.
2 In \(\left[\mathrm{Al}(\mathrm{OH})_{4}\right]^{-}\)ion, \({\text{Al}}\,\,{\text{is}}\,\,{\text{s}}{{\text{p}}^{\text{3}}}\) hybridised.
3 In \(\left[\mathrm{Al}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{3+}\) ion, \({\text{Al}}\,\,{\text{is}}\,\,{\text{s}}{{\text{p}}^{\text{3}}}{{\text{d}}^{\text{2}}}\) hybridised.
4 Both Boron and \(\mathrm{Al}\) form \({\left[ {{\text{M}}{{\text{F}}_{\text{6}}}} \right]^{{\text{3 - }}}}\) ion.
Explanation:
Conceptual Questions
CHXI11:THE P-BLOCK ELEMENTS
316688
For making good quality mirrors, plates of float glass are used. These are obtained by floating molten glass over a liquid metal which does not solidify before glass. The metal used can be
1 tin
2 sodium
3 magnesium
4 mercury
Explanation:
It is mercury, because mercury exists as liquid at room temperature.
CHXI11:THE P-BLOCK ELEMENTS
316689
For compound having the formula \(\mathrm{GaAlCl}_{4}\), the correct option from the following is
1 Ga is more electronegative than Al and is present as a cationic part of the salt \({\rm{GaAlC}}{{\rm{l}}_4}\)
2 Oxidation state of Ga in the salt \({\rm{GaAlC}}{{\rm{l}}_4}\) is +3
3 Ga is coordinated with Cl in \(\mathrm{GaAlCl}_{4}\).
4 Cl forms bond with both Al and Ga in \(\mathrm{GaAlCl}_{4}\)
Ga is cationic part of salt \(\mathrm{GaAlCl}_{4}\). Electronegativity of Al and Ga respectively are 1.61 and 1.81 .
JEE - 2023
CHXI11:THE P-BLOCK ELEMENTS
316690
Identify the wrong statement
1 Aluminium forms \(\left[\mathrm{AlF}_{6}\right]^{3-}\) but boron does not form \({\left[ {{\text{B}}{{\text{F}}_{\text{6}}}} \right]^{{\text{3 - }}}}\) ion
2 \(\mathrm{BCl}_{3}\) exists as monomer but \(\mathrm{AlCl}_{3}\) forms a dimer
3 \(\mathrm{BF}_{3}\) is a weak Lewis acid than \(\mathrm{BCl}_{3}\)
4 For thallium, +3 oxidation state is more stable than +1 .
316687
The incorrect statement among the following is
1 \({\text{T}}{{\text{l}}^{{\text{3 + }}}}\) is unstable in solution and acts as strong oxidizing agent.
2 In \(\left[\mathrm{Al}(\mathrm{OH})_{4}\right]^{-}\)ion, \({\text{Al}}\,\,{\text{is}}\,\,{\text{s}}{{\text{p}}^{\text{3}}}\) hybridised.
3 In \(\left[\mathrm{Al}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{3+}\) ion, \({\text{Al}}\,\,{\text{is}}\,\,{\text{s}}{{\text{p}}^{\text{3}}}{{\text{d}}^{\text{2}}}\) hybridised.
4 Both Boron and \(\mathrm{Al}\) form \({\left[ {{\text{M}}{{\text{F}}_{\text{6}}}} \right]^{{\text{3 - }}}}\) ion.
Explanation:
Conceptual Questions
CHXI11:THE P-BLOCK ELEMENTS
316688
For making good quality mirrors, plates of float glass are used. These are obtained by floating molten glass over a liquid metal which does not solidify before glass. The metal used can be
1 tin
2 sodium
3 magnesium
4 mercury
Explanation:
It is mercury, because mercury exists as liquid at room temperature.
CHXI11:THE P-BLOCK ELEMENTS
316689
For compound having the formula \(\mathrm{GaAlCl}_{4}\), the correct option from the following is
1 Ga is more electronegative than Al and is present as a cationic part of the salt \({\rm{GaAlC}}{{\rm{l}}_4}\)
2 Oxidation state of Ga in the salt \({\rm{GaAlC}}{{\rm{l}}_4}\) is +3
3 Ga is coordinated with Cl in \(\mathrm{GaAlCl}_{4}\).
4 Cl forms bond with both Al and Ga in \(\mathrm{GaAlCl}_{4}\)
Ga is cationic part of salt \(\mathrm{GaAlCl}_{4}\). Electronegativity of Al and Ga respectively are 1.61 and 1.81 .
JEE - 2023
CHXI11:THE P-BLOCK ELEMENTS
316690
Identify the wrong statement
1 Aluminium forms \(\left[\mathrm{AlF}_{6}\right]^{3-}\) but boron does not form \({\left[ {{\text{B}}{{\text{F}}_{\text{6}}}} \right]^{{\text{3 - }}}}\) ion
2 \(\mathrm{BCl}_{3}\) exists as monomer but \(\mathrm{AlCl}_{3}\) forms a dimer
3 \(\mathrm{BF}_{3}\) is a weak Lewis acid than \(\mathrm{BCl}_{3}\)
4 For thallium, +3 oxidation state is more stable than +1 .
316687
The incorrect statement among the following is
1 \({\text{T}}{{\text{l}}^{{\text{3 + }}}}\) is unstable in solution and acts as strong oxidizing agent.
2 In \(\left[\mathrm{Al}(\mathrm{OH})_{4}\right]^{-}\)ion, \({\text{Al}}\,\,{\text{is}}\,\,{\text{s}}{{\text{p}}^{\text{3}}}\) hybridised.
3 In \(\left[\mathrm{Al}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{3+}\) ion, \({\text{Al}}\,\,{\text{is}}\,\,{\text{s}}{{\text{p}}^{\text{3}}}{{\text{d}}^{\text{2}}}\) hybridised.
4 Both Boron and \(\mathrm{Al}\) form \({\left[ {{\text{M}}{{\text{F}}_{\text{6}}}} \right]^{{\text{3 - }}}}\) ion.
Explanation:
Conceptual Questions
CHXI11:THE P-BLOCK ELEMENTS
316688
For making good quality mirrors, plates of float glass are used. These are obtained by floating molten glass over a liquid metal which does not solidify before glass. The metal used can be
1 tin
2 sodium
3 magnesium
4 mercury
Explanation:
It is mercury, because mercury exists as liquid at room temperature.
CHXI11:THE P-BLOCK ELEMENTS
316689
For compound having the formula \(\mathrm{GaAlCl}_{4}\), the correct option from the following is
1 Ga is more electronegative than Al and is present as a cationic part of the salt \({\rm{GaAlC}}{{\rm{l}}_4}\)
2 Oxidation state of Ga in the salt \({\rm{GaAlC}}{{\rm{l}}_4}\) is +3
3 Ga is coordinated with Cl in \(\mathrm{GaAlCl}_{4}\).
4 Cl forms bond with both Al and Ga in \(\mathrm{GaAlCl}_{4}\)
Ga is cationic part of salt \(\mathrm{GaAlCl}_{4}\). Electronegativity of Al and Ga respectively are 1.61 and 1.81 .
JEE - 2023
CHXI11:THE P-BLOCK ELEMENTS
316690
Identify the wrong statement
1 Aluminium forms \(\left[\mathrm{AlF}_{6}\right]^{3-}\) but boron does not form \({\left[ {{\text{B}}{{\text{F}}_{\text{6}}}} \right]^{{\text{3 - }}}}\) ion
2 \(\mathrm{BCl}_{3}\) exists as monomer but \(\mathrm{AlCl}_{3}\) forms a dimer
3 \(\mathrm{BF}_{3}\) is a weak Lewis acid than \(\mathrm{BCl}_{3}\)
4 For thallium, +3 oxidation state is more stable than +1 .
