Question

21. What are the quantum numbers of 17th electron of Chlorine, 25th electron of any element and 18th electron of Argon.

Answer 1

I. Quantum number of 17the electron in chlorine :

n= 3, l= 1, m_l = 0 and s= 1/2

II. Quantum number of 25th electron of any element:

n= 3, l= 2, m_l = 2 and s= -1/2

III. Quantum numbers of 18th electron of Argon

n= 3, l= 2, m_l = 1 and s= 1/2