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प्रश्न
Explain the following:
Silicon forms \[\ce{SiF^{2-}6}\] ion whereas corresponding fluoro compound of carbon is not known.
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उत्तर
The bond dissociation energy decreases rapidly as the atomic size increases. Since the atomic size of carbon is much smaller (77 pm) as compared to that of silicon (118 pm), therefore, carbon-carbon bond dissociation energy is much higher (348 kJ mol–1) than that of silicon-silicon bond (297 kJ mol–1). Hence, because C – C bonds are much stronger as compared to Si-Si bonds, carbon has a much higher tendency for catenation than silicon.
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संबंधित प्रश्न
Rationalise the given statement and give a chemical reaction:
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Classify the following oxide as neutral, acidic, basic or amphoteric:
PbO2
Classify the following oxide as neutral, acidic, basic or amphoteric:
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Write suitable chemical equations to show the nature of the following oxide.
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Write suitable chemical equations to show the nature of the following oxide.
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(iv) sp2 hybridisation of carbon.
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CCl4 is immiscible in water, whereas SiCl4 is easily hydrolysed.
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CO2 is a gas whereas SiO2 is a solid.
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Explain the following:
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