Question

How many electrons have a +1/2 spin in the 3d, 4d and 5d orbits combined?
O 15
O 30
O 5
O 10

Answer 1

The number of electrons with +1/2 spin in given three d-orbitals; 3d, 4d, and 5d is 15.

Given:

The atomic orbitals 3d, 4d and 5d orbitals.

To find:

The number of electrons with +1/2 spin in the 3d, 4d and 5d orbitals combined.

Solution:

The number of orbitals in d-orbital = 5

Number of electrons in each orbital = 2

Number of electrons with +1/2 spin in one orbital of d sublevel = 1

Number of electrons with -1/2 spin in one orbital of d sublevel = 1

Number of electrons with +1/2 spin in d orbital:

$= 1\times 5 =5$

Number of electrons with -1/2 spin in d orbital:

$= 1\times 5 =5$

Number of electrons with +1/2 spin in given three d-orbitals; 3d, 4d, and 5d

$=3\times 5 = 15$

The number of electrons with +1/2 spin in given three d-orbitals; 3d, 4d, and 5d is 15.

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