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Question
The energy associated with the first orbit of He+ is ____________ J.
Options
− 2.18 × 10−18
− 0.54 × 10−18
− 8.72 × 10−18
− 4.69 × 10−18
MCQ
Fill in the Blanks
Solution
The energy associated with the first orbit of He+ is − 8.72 × 10−18 J.
Explanation:
Energy of first orbit of He+:
En = `-2.18 xx 10^-18 (("Z"^2)/("n"^2)) "J"`
= `-2.18 xx 10^-18 (2^2/1^2)`
= − 8.72 × 10−18 J
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