The valence electrons of element 12Mg are in the

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Element X, with electronic configuration 2, 8, 2 and element Y with electronic configuration 2, 8, 7 are like to combine by

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If an element R belongs to the same group as sodium, an aqueous solution of ROH will

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An atom 17 protons, 17 electrons and 18 neutrons has a mass number of

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Lead and tin are the components of

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Which of the following is an ore of aluminium?

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Which of the following metals is not extracted by electrolysis ?

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The following oxides react with both acids and bases to form salts except

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Which of the following is used as water softener?

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Which of the following when heated strongly in air will leave a metal as residue?

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When chlorine is added to slaked lime, the product obtained is

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Which of the substance lettered P to V in the equation below would be left on the filter paper if the reaction mixture were filtered?

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