Answer:
4d¹ electron has quantum numbers
n=4; l=2; ml= -2; ms= 1/2
Explanation:
There are 4 quantum numbers, namely
the principal quantum number (n)
the orbital angular momentum quantum number (l)
the magnetic quantum number (ml)
the electron spin quantum number (ms)
The principal quantum number describes the orbit or shell of the electron
here n = 4 ⇒ electron is in 4th shell
the orbital angular momentum quantum number describes the shape of orbital the electron is present in.
l= 0 ⇒ s-orbital
l= 1 ⇒ p-orbital
l= 2 ⇒ d-orbital
l= 3 ⇒ f-orbital
In our case l= 2 ⇒ p-orbital
ml specifies in which orbital electron is present of given shape
ml has 2l+1 values,which range from -1 to +l
here l = 2 ⇒ ml has 2(2)+1 = 5 values (-2 to +2)
so electron is present in one of the five d-orbitals
ms represents the spin of electron (+1/2 or -1/2)
If +1/2 represents clockwise then -1/2 represents anti-clockwise and vice-versa.
⇒ 4d¹ electron has quantum numbers
n=4; l=2; ml= -2; ms= 1/2.
