Question

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

Answer 1

Hund's rule allows us to find that the number of combined mismatched electrons is 12

Hund's rule is which configuration has the lowest energy in a system, so this must be met

• Electrons spin are distributed in a parallel configuration to decrease energy

• For a given total spin, the lowest energy value is when the angular momentum is maximum.

In this case the number of sublevel of the  d orbital where they fit

           # sublevels = 2 d + 1

           # sublevels = 2 2 +1

           # sublevels = 5

Each sublevel fits two electrons according to the Pauli principle, which establishes that all quantum numbers in a novel cannot be the same.

Let's distribute the electrons at each level

level        electrons

3d             ½ ½ ½

4d          ½ ½ ½ ½

5d      ½ ½ ½ ½ ½

Where there is a single electron in each sublevel according to Hund's principle

• The number of unpaired electrons combined is 12

In conclusion using Hund's rule we can find that the number of combined unpacked electrons is 12

Learn more about Hund's rule here:

brainly.com/question/13115697

Answer 2

Answer:15

Explanation: I have the same college class is based on hunds rule