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प्रश्न
Which of the following oxides is acidic in nature?
पर्याय
B2O3
Al2O3
Ga2O3
In2O3
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उत्तर
B2O3
Explanation:
B2O3 is acidic in nature. It reacts with basic oxides to form metal borates. Acidic nature decreases on moving down the group.
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संबंधित प्रश्न
Suggest reasons why the B–F bond lengths in BF3 (130 pm) and `"BF"_4^(-)` (143 pm) differ.
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In the structure of diborane ______.
Dry ice is ______.
Which of the following statements are correct. Answer on the basis of Figure.
(i) The two birdged hydrogen atoms and the two boron atoms lie in one plane;
(ii) Out of six B – H bonds two bonds can be described in terms of 3 centre 2-electron bonds.
(iii) Out of six B – H bonds four B – H bonds can be described in terms of 3 centre 2 electron bonds;
(iv) The four-terminal B – H bonds are two centre-two electron regular bonds.
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AlCl3
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Explain the following:
PbX2 is more stable than PbX4.
Explain the following:
Electron gain enthalpy of chlorine is more negative as compared to fluorine.
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| Column I | Column II |
| (i) Boron in [B(OH)4]– | (a) sp2 |
| (ii) Aluminium in [Al(H2O)6]3+ | (b) sp3 |
| (iii) Boron in B2H6 | (c) sp3d2 |
| (iv) Carbon in Buckminsterfullerene | |
| (v) Silicon in \[\ce{SiO^{4-}4}\] | |
| (vi) Germanium in [GeCl6]2– |
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Ionisation enthalpy
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Though fluorine is more electronegative than chlorine yet BF3 is a weaker Lewis acid than BCl3
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