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SHARAM PUBLICATION-GROUP 18 ELEMENTS-EXERCISE
- The inert gas abundantly found in atomospher is
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- Who discovered Radon.
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- XeF6 on complete hydrolysis gives:
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- Give the shape of XeOF4
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- Give the shape of XeOF2
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- Give the shape of XeO2F2
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- What do the sea divers use ?
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- Name two scientists associated with discovery of noble gasses.
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- Which inert gas contains less than eight electrons in its outer shel...
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- Give a method of preparation of XeF4.
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- Mention one use of each of four noble gases .
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- What are the causes of chemical inertness of noble gases ?
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- Give the structure of XeF(6) .
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- Name the zero group elements and give their atomic numbers .
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- Explain why XeF6 cannot be stored in glassvessels ?
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- Xenon does not form fluorides such as XeF(3)andXeF(5) Why ?
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- Majority of noble gas compounds are those of Xenon. Explain.
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- Why the noble gases , in general , are chemically inert ?
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- Why is neon generally used for warning signals ?
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- Nobles gases are placed in zero group .Explain.
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