Question

Energy associated with the first orbit of He+ is
A) 8.72 x 10-18 Joules
B) 0.872 x 10-18 Joules
C) -0.872 x 10-18 Joules
D) -8.72 x 10-18 Joules​

Answer 1

Explanation:

d is the correct answer

Answer 2

Answer:

$(d) \: - 8.72 \times {10}^{ - 18}$

Explanation:

${z}^{2} \times energy \: of \: 1st \: orbit \: of \: hydrogen \\ {z}^{2} \times - 13.6 \times 1.6 \times {10}^{ - 19} \\ 4 \times - 21.76 \times {10}^{ - 19} \\ 8.7 \times 10 {}^{ - 18}$

Hope you got the answer!

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