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# Which quantum number, or combination of quantum numbers, is needed to specify a given subshell in an atom? (a) n (b) l (c) n and l

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### Chemistry & Chemical Reactivity

9th Edition
John C. Kotz + 3 others
Publisher: Cengage Learning
ISBN: 9781133949640

#### Solutions

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Section
BuyFindarrow_forward

### Chemistry & Chemical Reactivity

9th Edition
John C. Kotz + 3 others
Publisher: Cengage Learning
ISBN: 9781133949640
Chapter 6.5, Problem 3RC
Textbook Problem
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## Which quantum number, or combination of quantum numbers, is needed to specify a given subshell in an atom? (a) n (b) l (c) n and l

Interpretation Introduction

Interpretation: The quantum number or combination of quantum number which needed to specify a given subshell in an atom is to be determined from the given option.

Concept introduction:

Quantum numbers are numbers, which explains the existence and the behavior of electron in an atom.

1. a) Principle quantum number is represented by n and this number describes the energy of the orbital and the size of an atom.
2. b) Angular momentum quantum number (or azimuthal quantum number) is represented by l and this number indicates the shape of the orbitals.
3. c) Magnetic quantum number is represented by ml and this number indicates the orientation of the orbital.
4. d) Spin quantum number is represented by ms and this number indicates the spin of the electron.

### Explanation of Solution

Reason for correct option

The principal quantum number represents the shell. But the value of l indicates the subshell of a shell. The values of l when the principal quantum number is n are from 0 to (n1) . Each value indicates subshell. The value of nandl can specify a particular subshell in an atom

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