Explanation Given info: The atom is singly ionized He, He+ Formula used: The energy of an electron in the n t h Bohr orbit is given by E n = − Z 2 m k 2 e 4 2 n 2 ℏ 2 (1.1) The negative sign indicates the bound state of the electron. Calculation: The values of different constants as considered for calculation are k = 8.99 × 10 9 N .m 2 .C -2 m = 9.11 × 10 − 31 kg ℏ =1 .055 × 10 -34 J-s e=1 .6 × 10 -19 C Substituting these values in Eq. 1.1 we get E n = − Z 2 ( 21.44 × 10 − 19 ) n 2 J (1.2) For singly ionized He, Z = 2, so Eq. 1.2 becomes E n = − 4 × ( 21.44 × 10 − 19 ) n 2 × 1

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ISBN: 9781464196393

Author: Freedman

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Chapter 26, Problem 84QAP

To determine

The energy values of the first 10 states of singly ionized He.

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Chapter 26, Problem 83QAP

Chapter 26, Problem 85QAP

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