SPD configurations

• How many electrons can each orbital hold?

  Each orbital can hold a maximum of 2 electrons.
• How many orbitals does the s sub shell hold?

  one orbital
• how many orbitals does the p sub shell hold?

  three orbitals
• how many orbitals does the d sub shell hold?

  five orbitals
• What is the correct spd configuration for chromium?

  1s^2 , 2s^2, 2p^6, 3s^2, 3p^6, 4s^1, 3d^5
• What is the correct spd configuration for copper?

  1s^2, 2s^2, 2p^6, 3s^2, 3p^6, 4s^1, 3d^10
• What happens to the SPD configuration with anions?

  Electrons are added based on their charge

  E.g Oxygen gains two electrons and goes from 2p^4 to 2p^6
• What happens to the SPD configuration with cations?

  Electrons are removed based on their charge

  4s subshell must be removed first

  E.g Fe 3+ loses both electrons from the 4s sub shell and one from the 3d sub shell