S1.3 Electron configurations (HL)
13 revision questions with answers for S1.3 Electron configurations (HL). Read them here, or play the set as a class game on the projector. Free to host, and students join with a code.
Energy to remove one mole of electrons from one mole of gaseous atoms?
- Electron affinity
- Lattice enthalpy
- First ionisation energyRight answer
- Enthalpy of atomisation
What this set covers
Ionisation energy at greater depth: the convergence limit of hydrogen's spectrum, E = hf, and what jumps in successive ionisation energies reveal about group and electron shells. It also explains the dips across period 3.
- Common mix-up
- Students often blame the Al and S dips on the wrong thing: Al loses a 3p electron, which is higher in energy than 3s, while S loses a spin-paired electron.
- Revision tip
- Sketch first ionisation energy across period 3 from memory, then label the two dips with their reasons in one short phrase each.
All 13 questions and answers
Energy to remove one mole of electrons from one mole of gaseous atoms?
Answer: First ionisation energy
Hydrogen's ionisation energy is found from the frequency at the spectrum's…?
Answer: Convergence limit
Equation linking a photon's energy to its frequency?
Answer: E = hf
In hydrogen, ionisation corresponds to the electron moving between which levels (n values)?
Answer: 1 → ∞
Successive IEs: 578, 1817, 2745, 11577 kJ mol⁻¹. Which group is the element in?
Answer: Group 13
Electrons removed before the first large jump in successive IEs equal the number of…?
Answer: Valence electrons
A large jump between successive IEs shows the next electron comes from…?
Answer: An inner shell
Each successive IE is larger because each electron is removed from a more…?
Answer: Positive ion
A graph of log(successive IE) for potassium shows electrons in how many main levels?
Answer: 4
First IE of Al is lower than Mg's because its outer electron is in the…?
Answer: 3p sublevel
First IE of S is lower than P's because the electron removed from S is…?
Answer: Spin-paired
Period 3 element with the highest first ionisation energy?
Answer: Argon
Element with the highest first ionisation energy of all?
Answer: Helium
Play it as a class game
Play this set opens it in splycr, where you can host it for your class straight away. Hosting needs no account: put the room code on the projector, and students join from a phone with the code and their first name. Each question plays as multiple choice, and the three wrong options were written for that question.