Which three quantum numbers are associated with the 4d orbital?

Which of the following sets of quantum numbers refers to a 4d orbital? a. n=2 l=1 m=-1 b. n=2 l=4 m=-1 c. n=4 l=2 m=-1 d. n=4 l=3 m=0 e n=4 l=3 m=+2

Answer

c. n=4 l=2 m=-1

Quantum number tells us about the position of an electron. According to Pauli exclusion principle no two electrons can have the same set ofall our quantum numbers. Quantum numbers are of four types and all the four types explains different position of an electron as explained below: 1. Principal quantum number (n): It tells us about the shell in which electron is present. Its value is n- 1,2,3 2. Azimuthal quantum number (): It tells us about the sub-shell in which electron is present. Its value is from 1-0,1,2, till (n-1). 3. Magnetic quantum number (m): It tells us about the orbital in which electron is present. Its value is from mF -1 to +1. 4. Spin quantum number (ms): It tells us about the spin of electron which can either be +1/2 or 1/2 Now, for a 4d orbital, the value of n is 4 and l is 2. The value of m can be_2,-1, 0, +1 or +2 Hence, the correct option is c.

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