316206
Which of the following is the most basic oxide?
1 \(\mathrm{Al}_{2} \mathrm{O}_{3}\)
2 \(\mathrm{Sb}_{2} \mathrm{O}_{3}\)
3 \(\mathrm{Bi}_{2} \mathrm{O}_{3}\)
4 \(\mathrm{SeO}_{2}\)
Explanation:
Metallic oxides are basic in nature. Of the given, \(\mathrm{Bi}_{2} \mathrm{O}_{3}\) is basic. \(\left(\mathrm{Al}_{2} \mathrm{O}_{3}, \mathrm{Sb}_{2} \mathrm{O}_{3}\right.\)-amphoteric, \(\mathrm{SeO}_{2}\)-acidic).
CHXI11:THE P-BLOCK ELEMENTS
316207
Group – 13 elements react with \(\mathrm{O}_{2}\) in amorphous form to form oxides of type \(\mathrm{M}_{2} \mathrm{O}_{3}(\mathrm{M}=\) element). Which among the following is the most basic oxide?
1 \(\mathrm{Al}_{2} \mathrm{O}_{3}\)
2 \(\mathrm{Tl}_{2} \mathrm{O}_{3}\)
3 \(\mathrm{B}_{2} \mathrm{O}_{3}\)
4 \(\mathrm{Ga}_{2} \mathrm{O}_{3}\)
Explanation:
The order of basic character of group – 13 oxides increases with increase in the size of the central atom down the group. Thus, \(\mathrm{Tl}_{2} \mathrm{O}_{3}\) is most basic oxide.
JEE - 2023
CHXI11:THE P-BLOCK ELEMENTS
316208
\(\mathrm{BCl}_{3}\) exists as monomer whereas \(\mathrm{AlCl}_{3}\) is dimerised through halogen bridging due to
1 Small size of Boron
2 Absence of d-orbitals in Boron.
3 Halogen form double bond with Aluminium
4 Al has more electronegativity than B.
Explanation:
Conceptual Questions
CHXI11:THE P-BLOCK ELEMENTS
316209
Which of the following reactions will not give the anhydrous \(\mathrm{AlCl}_{3}\) ?
1 By heating \(\mathrm{AlCl}_{3} \cdot 6 \mathrm{H}_{2} \mathrm{O}\)
2 By passing dry \(\mathrm{HCl}\) gas on heated aluminium powder
3 By passing dry chlorine gas on heated aluminium powder
4 By passing dry chlorine gas over a heated mixture of alumina and coke
Explanation:
Hydrated aluminium chloride undergoes decomposition to form \(\mathrm{Al}_{2} \mathrm{O}_{3}\) on heating. \(\begin{gathered}2 \mathrm{AlCl}_{3} \cdot 6 \mathrm{H}_{2} \mathrm{O} \xrightarrow{\Delta} 2 \mathrm{Al}(\mathrm{OH})_{3}+6 \mathrm{HCl} \\2 \mathrm{Al}(\mathrm{OH})_{3} \xrightarrow{\Delta} \mathrm{Al}_{2} \mathrm{O}_{3}+3 \mathrm{H}_{2} \mathrm{O}\end{gathered}\)
316206
Which of the following is the most basic oxide?
1 \(\mathrm{Al}_{2} \mathrm{O}_{3}\)
2 \(\mathrm{Sb}_{2} \mathrm{O}_{3}\)
3 \(\mathrm{Bi}_{2} \mathrm{O}_{3}\)
4 \(\mathrm{SeO}_{2}\)
Explanation:
Metallic oxides are basic in nature. Of the given, \(\mathrm{Bi}_{2} \mathrm{O}_{3}\) is basic. \(\left(\mathrm{Al}_{2} \mathrm{O}_{3}, \mathrm{Sb}_{2} \mathrm{O}_{3}\right.\)-amphoteric, \(\mathrm{SeO}_{2}\)-acidic).
CHXI11:THE P-BLOCK ELEMENTS
316207
Group – 13 elements react with \(\mathrm{O}_{2}\) in amorphous form to form oxides of type \(\mathrm{M}_{2} \mathrm{O}_{3}(\mathrm{M}=\) element). Which among the following is the most basic oxide?
1 \(\mathrm{Al}_{2} \mathrm{O}_{3}\)
2 \(\mathrm{Tl}_{2} \mathrm{O}_{3}\)
3 \(\mathrm{B}_{2} \mathrm{O}_{3}\)
4 \(\mathrm{Ga}_{2} \mathrm{O}_{3}\)
Explanation:
The order of basic character of group – 13 oxides increases with increase in the size of the central atom down the group. Thus, \(\mathrm{Tl}_{2} \mathrm{O}_{3}\) is most basic oxide.
JEE - 2023
CHXI11:THE P-BLOCK ELEMENTS
316208
\(\mathrm{BCl}_{3}\) exists as monomer whereas \(\mathrm{AlCl}_{3}\) is dimerised through halogen bridging due to
1 Small size of Boron
2 Absence of d-orbitals in Boron.
3 Halogen form double bond with Aluminium
4 Al has more electronegativity than B.
Explanation:
Conceptual Questions
CHXI11:THE P-BLOCK ELEMENTS
316209
Which of the following reactions will not give the anhydrous \(\mathrm{AlCl}_{3}\) ?
1 By heating \(\mathrm{AlCl}_{3} \cdot 6 \mathrm{H}_{2} \mathrm{O}\)
2 By passing dry \(\mathrm{HCl}\) gas on heated aluminium powder
3 By passing dry chlorine gas on heated aluminium powder
4 By passing dry chlorine gas over a heated mixture of alumina and coke
Explanation:
Hydrated aluminium chloride undergoes decomposition to form \(\mathrm{Al}_{2} \mathrm{O}_{3}\) on heating. \(\begin{gathered}2 \mathrm{AlCl}_{3} \cdot 6 \mathrm{H}_{2} \mathrm{O} \xrightarrow{\Delta} 2 \mathrm{Al}(\mathrm{OH})_{3}+6 \mathrm{HCl} \\2 \mathrm{Al}(\mathrm{OH})_{3} \xrightarrow{\Delta} \mathrm{Al}_{2} \mathrm{O}_{3}+3 \mathrm{H}_{2} \mathrm{O}\end{gathered}\)
316206
Which of the following is the most basic oxide?
1 \(\mathrm{Al}_{2} \mathrm{O}_{3}\)
2 \(\mathrm{Sb}_{2} \mathrm{O}_{3}\)
3 \(\mathrm{Bi}_{2} \mathrm{O}_{3}\)
4 \(\mathrm{SeO}_{2}\)
Explanation:
Metallic oxides are basic in nature. Of the given, \(\mathrm{Bi}_{2} \mathrm{O}_{3}\) is basic. \(\left(\mathrm{Al}_{2} \mathrm{O}_{3}, \mathrm{Sb}_{2} \mathrm{O}_{3}\right.\)-amphoteric, \(\mathrm{SeO}_{2}\)-acidic).
CHXI11:THE P-BLOCK ELEMENTS
316207
Group – 13 elements react with \(\mathrm{O}_{2}\) in amorphous form to form oxides of type \(\mathrm{M}_{2} \mathrm{O}_{3}(\mathrm{M}=\) element). Which among the following is the most basic oxide?
1 \(\mathrm{Al}_{2} \mathrm{O}_{3}\)
2 \(\mathrm{Tl}_{2} \mathrm{O}_{3}\)
3 \(\mathrm{B}_{2} \mathrm{O}_{3}\)
4 \(\mathrm{Ga}_{2} \mathrm{O}_{3}\)
Explanation:
The order of basic character of group – 13 oxides increases with increase in the size of the central atom down the group. Thus, \(\mathrm{Tl}_{2} \mathrm{O}_{3}\) is most basic oxide.
JEE - 2023
CHXI11:THE P-BLOCK ELEMENTS
316208
\(\mathrm{BCl}_{3}\) exists as monomer whereas \(\mathrm{AlCl}_{3}\) is dimerised through halogen bridging due to
1 Small size of Boron
2 Absence of d-orbitals in Boron.
3 Halogen form double bond with Aluminium
4 Al has more electronegativity than B.
Explanation:
Conceptual Questions
CHXI11:THE P-BLOCK ELEMENTS
316209
Which of the following reactions will not give the anhydrous \(\mathrm{AlCl}_{3}\) ?
1 By heating \(\mathrm{AlCl}_{3} \cdot 6 \mathrm{H}_{2} \mathrm{O}\)
2 By passing dry \(\mathrm{HCl}\) gas on heated aluminium powder
3 By passing dry chlorine gas on heated aluminium powder
4 By passing dry chlorine gas over a heated mixture of alumina and coke
Explanation:
Hydrated aluminium chloride undergoes decomposition to form \(\mathrm{Al}_{2} \mathrm{O}_{3}\) on heating. \(\begin{gathered}2 \mathrm{AlCl}_{3} \cdot 6 \mathrm{H}_{2} \mathrm{O} \xrightarrow{\Delta} 2 \mathrm{Al}(\mathrm{OH})_{3}+6 \mathrm{HCl} \\2 \mathrm{Al}(\mathrm{OH})_{3} \xrightarrow{\Delta} \mathrm{Al}_{2} \mathrm{O}_{3}+3 \mathrm{H}_{2} \mathrm{O}\end{gathered}\)
316206
Which of the following is the most basic oxide?
1 \(\mathrm{Al}_{2} \mathrm{O}_{3}\)
2 \(\mathrm{Sb}_{2} \mathrm{O}_{3}\)
3 \(\mathrm{Bi}_{2} \mathrm{O}_{3}\)
4 \(\mathrm{SeO}_{2}\)
Explanation:
Metallic oxides are basic in nature. Of the given, \(\mathrm{Bi}_{2} \mathrm{O}_{3}\) is basic. \(\left(\mathrm{Al}_{2} \mathrm{O}_{3}, \mathrm{Sb}_{2} \mathrm{O}_{3}\right.\)-amphoteric, \(\mathrm{SeO}_{2}\)-acidic).
CHXI11:THE P-BLOCK ELEMENTS
316207
Group – 13 elements react with \(\mathrm{O}_{2}\) in amorphous form to form oxides of type \(\mathrm{M}_{2} \mathrm{O}_{3}(\mathrm{M}=\) element). Which among the following is the most basic oxide?
1 \(\mathrm{Al}_{2} \mathrm{O}_{3}\)
2 \(\mathrm{Tl}_{2} \mathrm{O}_{3}\)
3 \(\mathrm{B}_{2} \mathrm{O}_{3}\)
4 \(\mathrm{Ga}_{2} \mathrm{O}_{3}\)
Explanation:
The order of basic character of group – 13 oxides increases with increase in the size of the central atom down the group. Thus, \(\mathrm{Tl}_{2} \mathrm{O}_{3}\) is most basic oxide.
JEE - 2023
CHXI11:THE P-BLOCK ELEMENTS
316208
\(\mathrm{BCl}_{3}\) exists as monomer whereas \(\mathrm{AlCl}_{3}\) is dimerised through halogen bridging due to
1 Small size of Boron
2 Absence of d-orbitals in Boron.
3 Halogen form double bond with Aluminium
4 Al has more electronegativity than B.
Explanation:
Conceptual Questions
CHXI11:THE P-BLOCK ELEMENTS
316209
Which of the following reactions will not give the anhydrous \(\mathrm{AlCl}_{3}\) ?
1 By heating \(\mathrm{AlCl}_{3} \cdot 6 \mathrm{H}_{2} \mathrm{O}\)
2 By passing dry \(\mathrm{HCl}\) gas on heated aluminium powder
3 By passing dry chlorine gas on heated aluminium powder
4 By passing dry chlorine gas over a heated mixture of alumina and coke
Explanation:
Hydrated aluminium chloride undergoes decomposition to form \(\mathrm{Al}_{2} \mathrm{O}_{3}\) on heating. \(\begin{gathered}2 \mathrm{AlCl}_{3} \cdot 6 \mathrm{H}_{2} \mathrm{O} \xrightarrow{\Delta} 2 \mathrm{Al}(\mathrm{OH})_{3}+6 \mathrm{HCl} \\2 \mathrm{Al}(\mathrm{OH})_{3} \xrightarrow{\Delta} \mathrm{Al}_{2} \mathrm{O}_{3}+3 \mathrm{H}_{2} \mathrm{O}\end{gathered}\)
