5th Year Irish Curriculum Study

Use nuclide notation to determine the numbers of protons, neutrons, and electrons in neutral atoms and simple ions.

Distinguish atomic number, mass number, relative atomic mass, and isotopes.

Compare the nuclear and Bohr models of the atom, stating one explanatory strength and one limitation of each model.

Explain quantised electron energy using main energy levels, the ground state, and excited states.

Predict whether a specified electron transition absorbs or emits a photon and determine the energy difference between the levels.

Use ΔE = hf to calculate photon energy or frequency for a specified electron transition.

Explain why electron transitions between fixed energy levels produce separate lines in the hydrogen emission spectrum.

Interpret a hydrogen energy-level diagram by matching specified electron transitions to their corresponding spectral lines.

Distinguish main energy levels, sublevels, and orbitals in the current model of the atom.

Describe the shapes and electron capacities of s and p orbitals.

Write sublevel electron configurations for neutral atoms among the first 20 elements.

Construct orbital-box diagrams for neutral atoms among the first 20 elements using the electron-filling rules.

Extend sublevel electron configurations to neutral atoms among the first 36 elements.

Write electron configurations for simple ions, excluding transition-metal ions, and identify stable configurations.

Identify sodium, strontium, and copper from line-emission spectrum data.

Identify salts of sodium, potassium, copper, lithium, barium, and strontium from flame-test observations.