JEE Main & Advanced Chemistry Hydrogen & Its Compounds Question Bank Hydrogen

  • question_answer Hydrogen accepts an electron to form inert gas configuration. In this it resembles [Pb. PMT 1997]

    A) Halogen

    B) Alkali metals

    C) Chalcogens

    D) Alkaline earth metals

    Correct Answer: A

    Solution :

    \[\underset{1{{s}^{1}}}{\mathop{H}}\,+{{e}^{-}}\to \underset{1{{s}^{2}}\text{ or }{{[He]}^{2}}}{\mathop{{{H}^{-}}}}\,\] \[\underset{{{[He]}^{2}}2{{s}^{2}}2{{p}^{5}}}{\mathop{F+{{e}^{-}}}}\,\to \underset{{{[He]}^{2}}2{{s}^{2}}2{{p}^{6}}\text{ or }{{[Ne]}^{10}}}{\mathop{{{F}^{-}}}}\,\]

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