Question

Determine the values of all the four quantum numbers of the 8th electron in O-atom and 15th electron in Cl atom

Answer 1

(1) O (Z = 8) 1s² 2s² 2p_x² 2p_y¹ 2p_z¹

Four quantum numbers for 2p_x¹ electron in oxygen atom.

n = principal quantum number = 2

l = azimuthal quantum number =1 

m = magnetic quantum number =+1 

s = spin quantum number = + 1/2

(2) Cl (Z = 17) 1s² 2s² 2p⁶ 3s² 3p_x² 3p_y² 3p_z¹

Four quantum numbers for 15^th electron in chlorine atom.

n = 3, l = 1, m = 0, s = + 1/2

n = 3, l = 2, m = +2, s = + 1/2