Answer:
Explanation:
To determine the number of unpaired electrons in the V4+ ion, we need to examine the electron configuration of the Vanadium atom and consider the loss of electrons to form the V4+ ion.
The electron configuration of a neutral Vanadium atom is 1s2 2s2 2p6 3s2 3p6 4s2 3d3. In the V4+ ion, the atom has lost 4 electrons, leaving it with an electron configuration of 1s2 2s2 2p6 3s2 3p6.
To determine the number of unpaired electrons, we look at the partially filled 3d orbital. In the V4+ ion, there are only three electrons in the 3d orbital, meaning that there are three unpaired electrons.
Therefore, the correct answer is (B) 3 unpaired electrons.