1.2.1 Electron Structure

1.2.1 Electron Structure

1. Define the terms first ionisation energy and successive ionisation energy [ ]

2. Explain that ionisation energies are influenced by nuclear charge, electron shielding and the distance of the outermost electron from the nucleus [ ]

3. predict from successive ionisation energies of an element: (i) the number of electrons in each shell of an atom, (ii) the group of the element [ ]

4. state the number of: (i) orbitals making up s-, p- and d-sub- shells, (ii) electrons that occupy s-, p- and d-sub- shells [ ]

5. describe the relative energies of s-, p- and d- orbitals for the shells 1, 2, 3 and the 4s and 4p orbitals [ ]

6. deduce the electron configurations of: (i) atoms, given the atomic number, up to Z = 36, (ii) ions, given the atomic number and ionic charge, limited to s and p blocks up to Z = 36 [ ]

7. classify the elements into s, p and d blocks [ ]

8. describe the shapes of s and p orbitals [ ]

9. state the number of electrons that can fill the first four shells [ ]

10. describe an orbital as a region that can hold up to two electrons, with opposite spins [ ]