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NCERT-THE P-BLOCK ELEMENTS-EXERCISE
- Give the reason for bleaching action of Cl2.
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- Name two poisonous gases which can be prepared from chlorine gas.
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- Why is ICI more reactive than I2?
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- Why is helium used in diving apparatus?
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- Balance the following equation: XeF6+H2OtoXeO2F2+HF
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- Why has it been difficult to study the chemistry of radon?
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- Discuss the general characteristics of Group 15 elements with referenc...
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- Why does the reactivity of nitrogen differ from phosphorus?
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- Discuss the trends in chemical reactivity of group 15 elements.
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- Why does NH3 form hydrogen bond but PH3 does not?
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- How is nitrogen prepared in the laboratory? Write the chemical equatio...
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- How is ammonia manufactured industrially?
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- Illustrate how copper metal can give different product on reaction wit...
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- Give the resonating structures of NO(2) and N(2)O(5).
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- The HNH angle value is higher than HPH, HAsH and HSbH angles. Why?
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- Why does R3P=O exist but R3N=O does not (R= alkyl group)?
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- Explain why NH(3) is basic while BiH(3) is only feebly basic ?
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- Nitrogen exists as diatomic molecule and phosphorus as P(4). Why ?
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- Write main differences between the properties of white phosphorus and ...
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- Why does nitrogen show catenation properties less than phosphorus.
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