calculate the energy and radius associated with He+
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E = -13.6Z²/n² eV
For first orbit if He+ Z = 2 and n = 1
E = -13.6 × 2^2 / 1^2
E = -54.4 eV
Energy associated with first orbit of He+ is -54.4 eV
——————-
R = 0.529 n^2 / Z Å
= 0.529 * 1^2 / 2
= 0.2645 Å
= 26.45 pm
Radius associated with He+ is 26.45 pm
For first orbit if He+ Z = 2 and n = 1
E = -13.6 × 2^2 / 1^2
E = -54.4 eV
Energy associated with first orbit of He+ is -54.4 eV
——————-
R = 0.529 n^2 / Z Å
= 0.529 * 1^2 / 2
= 0.2645 Å
= 26.45 pm
Radius associated with He+ is 26.45 pm
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