Electron Configuration

Question 1

Ionisation energy

Answer 1

This is the energy required to remove a mole of electrons from a mole atoms in the gaseous state (measured in kJ mol^-1)

Question 2

Draw and write the electron configuration for Cr (chromium)

Answer 2

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