Tamil Nadu Board of Secondary EducationHSC Science Class 11th

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

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

#### Solution

(1) O (Z = 8) 1s2 2s2 2px2py1 2pz1

Four quantum numbers for 2px1 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 3px2 3py2 3pz1

Four quantum numbers for 15th electron in chlorine atom:

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

(3) Cr (Z = 24) 1s2 2s2 2p2 3s2 3p2 3d2 4s1

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

Concept: Filling of Orbitals
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#### APPEARS IN

Tamil Nadu Board Samacheer Kalvi Class 11th Chemistry Volume 1 and 2 Answers Guide
Chapter 2 Quantum Mechanical Model of Atom
Evaluation | Q II. 10. | Page 64
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