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ICSE-P-BLOCK ELEMENTS-EXERCISE (PART-I)(Do not change the whole sentence)
- Nitrogen is an active non-metal.
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Playing Now - Nitrogen forms pentahalides.
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Play - Boiling point of phosphine is higher than that of ammonia.
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Play - Phosphorus occus in free state.
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Play - Hydrogen sulfide is a monobasic acid in solution.
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Play - The number of valence electrons for each member of halogen family is e...
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Play - Members of the oxygen family are called halogens.
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Play - The ionization enthalpy of selenium is less than that of tellurium. Th...
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Play - Oxygen is the most electronegative element in the periodic table.
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Play - The oxidation state of fluorine can also be + 2. The given statement i...
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Play - Hydride of sulfur is more stable than that of oxygen. The given statem...
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Play - The bond energy of fluorine is more than that of chlorine.
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Play - At room temperature, all the elements of group 17 exist in the gaseous...
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Play - Among halogens, fluorine is least reactive.
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Play - Fluorine can be prepared by heating NaF and MnO2 with conc. sulfuric a...
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Play - Electron gain enthalpies of noble gases are negative.
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Play - No compounds of Kr and Xe are known.
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Play - Hydrogen fluoride is a better reducing agent than hydrogen bromide.
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Play - XeOF4 has .... geometry
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Play - The first noble gas compound was prepared by Ramsay.
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