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Discussion :: GATE Physics

  1. The total energy of an ionic solid is given by an expression E = - α e2/4πϵ0r + B/r9 where α is Madelung constant, r is the distance between the nearest neighbours in the crystal and B is a constant. If r0 is the equilibrium separation between the nearest neighbours then the value of B is
    2. A.
    (α e2r08)/(36πϵ0)
    B.
    (α e2r08)/(4πϵ0)
    C.
    (2α e2r010)/(9πϵ0)
    D.
    (α e2r010)/(36πϵ0)

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    Answer : Option A

    Explanation :

    -NA-

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