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(D) For the first orbit of a monopositive $He^{+}$ ion,the atomic number $Z = 2$ and the orbit number $n = 1$.The energy of an electron in the $n^{th}

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$-8.72 	imes 10^{-18} \ J$

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(D) For the first orbit of a monopositive $He^{+}$ ion,the atomic number $Z = 2$ and the orbit number $n = 1$.The energy of an electron in the $n^{th}$ orbit is given by the formula:$E_n = -2.18 	imes 10^{-18} \left( \frac{Z^2}{n^2} ight) \ J$Substituting the values $Z = 2$ and $n = 1$:$E_1 = -2.18 	imes 10^{-18} \left( \frac{2^2}{1^2} ight) \ J$$E_1 = -2.18 	imes 10^{-18} 	imes 4 \ J$$E_1 = -8.72 	imes 10^{-18} \ J$

What is the amount of energy associated with the first orbit of a monopositive helium ion? $[R_{H} = 2.18 \times 10^{-18} \ J]$

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