Electronic Structure

• Bohr proposed that electrons could only exist in fixed energy levels
• An orbital is a region of space where electrons are likely to be found
• If species have the same electronic configuration, they are isoelectronic
• Ionisation energy is the amount of energy needed to remove a mole of electrons from a mole of gaseous atoms , forming gaseous cations
• Successive ionisation energy is removing more electrons from the same atom
• Large jumps in successive IE suggests the removed electron must be orbiting a lower energy value sub shell