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17 June, 05:41

Derive an expression similar to the equation for the energy levels above for the single electron in He + and Li2+. Calculate the numerical values for the 1s levels (n = 1) ?

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  1. 17 June, 05:46
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    from Bohr's equation,

    E = - Z²R/n²

    R = 13.6 eV

    Z = atomic number of element

    for 1s energy level n = 1

    E = - (Z) ² x (13.6) / (1) ²

    E = - 13.6Z²

    calculating the numerical for the 1s energy levels for He + and Li2+

    - for He+

    E = - 13.6 * (2) ² = - 54.4eV

    - for Li2+

    E = - 13.6 * (3) ² = - 122.4eV
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