Question

write the values of all quantum no. of all the electron in Li atom

Answer 1

Answer:

Explanation:

Answer : The values of all the quantum numbers of the valence electrons of lithium atom are,

Explanation :

There are 4 quantum numbers :

Principle Quantum Numbers : It describes the size of the orbital. It is represented by n. n = 1,2,3,4....

Azimuthal Quantum Number : It describes the shape of the orbital. It is represented as 'l'. The value of l ranges from 0 to (n-1). For l = 0,1,2,3... the orbitals are s, p, d, f...

Magnetic Quantum Number : It describes the orientation of the orbitals. It is represented as . The value of this quantum number ranges from . When l = 2, the value of  will be -2, -1, 0, +1, +2.

Spin Quantum number : It describes the direction of electron spin. This is represented as  The value of this is  for upward spin and  for downward spin.

The electronic configuration of sodium atom is,

In the lithium atom the last electron present in .

Now we have to calculate the values of all the quantum numbers of the valence electrons of sodium atom.

For  :

      (Because it is in 3rd shell)

        (Because it is in 's' orbital)

    (Because l = 0)

    (Because of the sign convention)

Answer 2

Explanation: quantum number for lithium are-

2,0,0, +1/2 or -1/2