Chemistry

Question Analysis
This question assesses the student's ability to determine the electron configuration of the 3d sublevel in a transition metal, specifically vanadium (V, atomic number 23).

Key Concept Explanation
Vanadium has 23 electrons, and the 3d sublevel must be filled after the 4s sublevel. The 4s sublevel is filled with 2 electrons, leaving 3 electrons to be placed in the 3d sublevel.

Step-by-step Solution
1. Identify the total number of electrons: Vanadium has 23 electrons.
2. Fill the orbitals in the correct order: 1s (2 electrons), 2s (2 electrons), 2p (6 electrons), 3s (2 electrons), 3p (6 ele...