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Q. No.The reason for the small radius of Ga compared to Al is-.
a. Poor screening effect of d and f orbitals
b. Increase in nuclear charge
c. Presence of higher orbitals
d. Higher atomic number
Choose the correct option
1. (a, b)
2. (b, c)
3. (c, d)
4. (a, d)
Subtopic: Boron Family- Preparations, Properties & Uses |
84%
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Consider the given two statements:
| Assertion (A): | Boron is the hardest element in group 13. |
| Reason (R): | High lattice enthalpy is due to the strong crystalline lattice. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A) |
| 2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
| 3. | (A) is True but (R) is False. |
| 4. | Both (A) and (R) are false |
Subtopic: Boron Family- Preparations, Properties & Uses |
85%
From NCERT
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Hints
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Identify the correct relationship of stability from the options provided.
1. \(\mathrm{TlI > TlI_3}\)
2. \(\mathrm{TlCl_3 > TlCl}\)
3. \(\mathrm{InI_3 > InI }\)
4. \(\mathrm{AlCl > AlCl_3 }\)
1. \(\mathrm{TlI > TlI_3}\)
2. \(\mathrm{TlCl_3 > TlCl}\)
3. \(\mathrm{InI_3 > InI }\)
4. \(\mathrm{AlCl > AlCl_3 }\)
Subtopic: Compounds of Boron- Preparations, Properties & Uses |
76%
From NCERT
NEET - 2023
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The element which exists in a liquid state for a wide range of temperatures and can be used for measuring high temperature is:
| 1. | B | 2. | Al |
| 3. | Ga | 4. | In |
Subtopic: Boron Family- Preparations, Properties & Uses |
84%
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The \(E^{\ominus}\) values for
\(\begin{aligned} & \mathrm{Al}^+ / \mathrm{Al}=+0.55 \mathrm{~V} \text { and } \mathrm{Tl}^{+} / \mathrm{Tl}=-0.34 \mathrm{~V} \\ & \mathrm{Al}^{3+} / \mathrm{Al}=-1.66 \mathrm{~V} \text { and } \mathrm{Tl}^{3+} / \mathrm{Tl}=+1.26 \mathrm{~V} \end{aligned} \)
The incorrect statement among the following is:
1. Al is more electropositive than TI.
2. Tl3+ is a good reducing agent than Tl1+.
3. Al+ is unstable in solution.
4. Tl can be easily oxidized to Tl+ as compared to Tl3+.
\(\begin{aligned} & \mathrm{Al}^+ / \mathrm{Al}=+0.55 \mathrm{~V} \text { and } \mathrm{Tl}^{+} / \mathrm{Tl}=-0.34 \mathrm{~V} \\ & \mathrm{Al}^{3+} / \mathrm{Al}=-1.66 \mathrm{~V} \text { and } \mathrm{Tl}^{3+} / \mathrm{Tl}=+1.26 \mathrm{~V} \end{aligned} \)
The incorrect statement among the following is:
1. Al is more electropositive than TI.
2. Tl3+ is a good reducing agent than Tl1+.
3. Al+ is unstable in solution.
4. Tl can be easily oxidized to Tl+ as compared to Tl3+.
Subtopic: Boron Family- Preparations, Properties & Uses |
65%
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NEET - 2023
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The correct order of Ionization enthalpy (∆iH kJ mol–1) for the elements of group 13 among the following is:
1. B > Al > Ga > In > Tl
2. B < Al < Ga < In < Tl
3. B < Al > Ga < In < Tl
4. B > Al < Ga > In < Tl
Subtopic: Compounds of Boron- Preparations, Properties & Uses |
77%
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Subtopic: Boron Family- Preparations, Properties & Uses |
93%
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Subtopic: Compounds of Boron- Preparations, Properties & Uses |
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Select the element (M) whose trihalides cannot be hydrolysed to form [M(H2O)6]3+.
| 1. | Ga | 2. | In |
| 3. | Al | 4. | B |
Subtopic: Boron Family- Preparations, Properties & Uses |
75%
From NCERT
NEET - 2023
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The exhibition of the highest coordination number depends on the availability of vacant orbitals in the central atom. Which of the following elements is not likely to act as a central atom in ?
1. B
2. Al
3. Ga
4. In
Subtopic: Compounds of Boron- Preparations, Properties & Uses |
89%
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