Quantum Numbers Class 10 | Structure of Atom | n, l, ml, ms quantum numbers fundamentals.
What are Quantum Numbers? What is the significance of quantum numbers? To describe the electron in an atom there three numbers n, l, ml and are called quantum numbers. Here you can see n, l, ml, and ms detailed explanation. 10th class physics chapter Structure of atom, Part 4. Watch the below video for a clear explanation and write the answers to the HomeTask.
Quantum Numbers
- Principal quantum number (n)
- The angular momentum quantum number (l)
- Magnetic quantum number (ml)
- Spin quantum number (ms)
Home Task:
1. Write a short note on each quantum number in detail.
You need to write about the following,
1. Principal quantum number
2. Angular momentum quantum number
3. Magnetic quantum number.
4. Spin quantum number.
Check your answers here: Answers
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D.S.Sowmya
ReplyDeleteQuantum numbers:
1)Each electron in an atom is described by a set of three numbers (n,l,m).These are Quantum numbers.
2) Quantum numbers describe the space around the nucleus where the electrons are found and also their energies .These are called atomic orbitals.
1) Principal Quantum number:
It is introduced by Neil's bohr.It is related to the size and energy of the main shell .Denoted by 'n' .If n increases the shells become larger and the energy increases. Represented by K,L,M....for each 'n' value there is one main shell .
2) The angular - momentum Quantum number:
It was introduced by Sommerfeld. It has integers values from 0 to n-1 for each value of 'n'.each (l) value represents one sun shell.It describes shape .s p,d...as follows .It is also called "azimuthal Quantum number " "subsidiary Quantum number".
3)The magnetic Quantum number : (ml).
It was introduced by Lande . values between -l and l including zero.This describe the orientation of the orbital .
4) Spin Quantum number:
The yellow light in the street lamps is comprised of a very closely spaced doublet when analyzed using high resolution spectroscope .Alkali and alkaline earth metal show that type of lines . To account such a behaviour spin Quantum number introduced by "Uhlenbeck and Goudsmit" in 1925.This represents the property of the electron denoted by (ms). Two possible orientations - clock wise and anticlockwise . Represented by +1/2 -1/2 . If both are positive value then the spins are parallel otherwise Anti parallel. Importance is seen when electrons occupy orbitals in multi eletron atoms.
Very Good D S Sowmya. I really appreciate your hard work and dedication to complete works. Keep practicing the same.
DeleteQuntam numbers:
ReplyDelete1)Each electron in an atom is described by a set of three numbers (n,l,m).These are Quantum numbers.
2) Quantum numbers describe the space around the nucleus where the electrons are found and also their energies .These are called atomic orbitals.
1) Principal Quantum number:
It is introduced by Neil's bohr.It is related to the size and energy of the main shell .Denoted by 'n' .If n increases the shells become larger and the energy increases. Represented by K,L,M....for each 'n' value there is one main shell .
2) The angular - momentum Quantum number:
It was introduced by Sommerfeld. It has integers values from 0 to n-1 for each value of 'n'.each (l) value represents one sun shell.It describes shape .s p,d...as follows .It is also called "azimuthal Quantum number " "subsidiary Quantum number".
3)The magnetic Quantum number : (ml).
It was introduced by Lande . values between -l and l including zero.This describe the orientation of the orbital .
4) Spin Quantum number:
The yellow light in the street lamps is comprised of a very closely spaced doublet when analyzed using high resolution spectroscope .Alkali and alkaline earth metal show that type of lines . To account such a behaviour spin Quantum number introduced by "Uhlenbeck and Goudsmit" in 1925.This represents the property of the electron denoted by (ms). Two possible orientations - clock wise and anticlockwise . Represented by +1/2 -1/2 . If both are positive value then the spins are parallel otherwise Anti parallel. Importance is seen when electrons occupy orbitals in multi eletron atoms.
M.vidya lakshmi