In the predicted electron configuration of Molybdenum (Mo), how many electrons are in the 4d subshell?

2. How many electrons are in the 4d subshell of the Molybdenum (III) ion?

To determine the number of electrons in the 4d subshell of Molybdenum (Mo), we need to look at the electron configuration of a neutral Mo atom and the Mo3+ ion, respectively.

For Molybdenum (Mo), the atomic number is 42. The electron configuration can be represented as follows:

1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^10 4p^6 5s^2 4d^5

From this electron configuration, we can see that there are 5 electrons in the 4d subshell of Molybdenum (Mo).

Now, let's determine the number of electrons in the 4d subshell of the Molybdenum (III) ion, which has a +3 charge. When an ion is formed, electrons are lost or gained to achieve stability. In the case of Molybdenum (III), 3 electrons are lost from the neutral Mo atom.

Therefore, the electron configuration of Molybdenum (III) ion is:

1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^10 4p^6

So, the Molybdenum (III) ion has no electrons in the 4d subshell.