AlF3 is soluble in HF only in the presence of KF due to the formation of:
1. | K3[AlF3H3] | 2. | K3[AlF6] |
3. | AlH3 | 4. | K[AlF3H] |
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The correct statement among the following is :
1. | Sn2+ is an oxidizing agent while Pb4+ is a reducing agent. |
2. | Sn2+ and Pb2+ both are oxidizing agents. |
3. | Sn4+ is a reducing agent while Pb4+ is an oxidizing agent. |
4. | Sn2+ is a reducing agent while Pb4+ is an oxidizing agent. |
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An element that cannot form ion is-
1. | Ga | 2. | Al |
3. | B | 4. | In |
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The correct order of atomic radii of the group 13 elements is-
1. B < Al < In < Ga < Tl
2. B < Al < Ga < In < Tl
3. B < Ga < Al < Tl < In
4. B < Ga < Al < In < Tl
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A compound among the following having a similar structure to graphite is:
1. B
2. B4C
3. B2H6
4. BN
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A compound among the following that is least likely to behave as a Lewis base is:
1. | NH3 | 2. | BF3 |
3. | OH- | 4. | H2O |
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1. | Sheet silicate | 2. | Pyrosilicate |
3. | Three dimensional silicate | 4. | Linear chain silicate |
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The stability of the +1 oxidation state increases in the sequence:
1. Al <Ga<In<Tl
2. Tl<In<Ga<Al
3. In<Tl<Ga<Al
4. Ga<In<Al<Tl
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Al2O3 can be converted to anhydrous AlCl3 by heating:
1.
2. with NaCl in solid-state
3. a mixture of and carbon in dry gas
4. with gas
The incorrect statement among the following is:
1. SnF4 is ionic in nature.
2. PbF4 is covalent in nature.
3. SiCl4 is easily hydrolysed.
4. GeX4 (X = F, Cl, Br, I) is more stable than GeX2
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