Electronic configuration for A-level

IAL Edexcel CHemistry electronic configuration including aufbau principal and Hunds rules

2.9 Know that an orbital is a region within an atom that can hold up to 2 electrons of opposite spin
2.12 describe the shapes of s and p orbitals
2.13 know that orbitals in subshells
i – each take a single electron before pairing up
Ii- pair up with 2 electrons of opposite spin
2.14 Predict electron configuration of H to Kr inclusive of their ions
2.15 understand electron configuration determines the chemical properties of an element.
2.16 Know the s,p, d,f blocks in the periodic table relate to their subshells