Question

Define Quantum number. Explain in brief all four types of Quantum number.​

Answer 1

Answer:

The set of numbers used to describe the position and energy of the electron in an atom are called quantum numbers. There are four quantum numbers, namely, principal, azimuthal, magnetic and spin quantum numbers.

Explanation:

Four quantum numbers can be used to completely describe all the attributes of a given electron belonging to an atom, these are:

Principal quantum number, denoted by n.

Orbital angular momentum quantum number (or azimuthal quantum number), denoted by l.

Magnetic quantum number, denoted by ml.

The electron spin quantum number, denoted by ms.

Electronic Quantum Numbers

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Answer 2

QUANTUM NUMBERS -

• Quantum numbers are the representation of the position of the electrons in an atom in the form of a set of numbers.
• It describes the trajectory of the electron in an atom.
• It also specifies the energy level of the electrons
• The four types of quantum numbers are -

1. Principal Quantum Number

• Depicts the number of electron's shell in the respective atom.
• Denoted by 'n' and is in form of an integer that is never zero.

2. Azimuthal Quantum Number

• It gives the account of the subshell position of the electron.
• Denoted by the letter 'l'.

3. Magnetic Quantum Number

• It gives detail of the orbit of the subshell in which the electron is present.
• Denoted by the letter 'm'.

4. Spin Quantum Number

• It describe the spin of the electrons in the atom.
• Denoted by the letter 's'.