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Karnataka Board PUCPUC Science Class 11

The energy associated with the first orbit in the hydrogen atom is - 2.18 × 10-18 J atom-1. What is the energy associated with the fifth orbit?

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Question

The energy associated with the first orbit in the hydrogen atom is - 2.18 × 10-18 J atom-1. What is the energy associated with the fifth orbit?

Numerical
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Solution

Energy associated with the fifth orbit of hydrogen atom is calculated as:

`"E"_5 = (-(2.18xx10^(-18)))/(5)^2 = (-2.18xx 10^(-18))/25`

E5 = - 8.72 × 10-20 J

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Chapter 2: Structure of Atom - EXERCISES [Page 70]

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NCERT Chemistry Part 1 and 2 [English] Class 11
Chapter 2 Structure of Atom
EXERCISES | Q 2.16 - (i) | Page 70

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