Electron Arrangement Practice Questions

Q1.   Use subshell notation to show electron arrangements in:

i) Kr                                  ii) F–                         iii) N3- 

iv) K+                                      v) S2-                       vi) Li+  

Q2.    Write an equation to show the third ionization energy of aluminium

Q3.   The first six ionisation energies of an element in period 3 are 787, 1577, 3232, 4356, 16091, and 19805 kJmol-1.

i) Identify the element, explaining your reasoning.

ii) Predict the value of the seventh ionisation energy, explaining your reasoning.

check your answers