Metallic Bonding
2 marks · EasyDraw a simple 2D diagram to represent the metallic lattice structure in a sample of rubidium metal. Clearly show and label the positive metal ions and sea of delocalised electrons.
Work this out on paper, then compare with the answer and worked solution below. With a free account you can submit written answers for marking.
Show answer
Must show: array of labelled rubidium ions (Rb), "sea" of delocalised electrons, labels: 'lattice of metal ions', 'sea of delocalised electrons' or similar
Common mistakes: showing individual atoms instead of ions; forgetting to label ions or electrons
Show mark scheme and worked solution
Marking points
M1 · 1 mark · Draws regular array of positive Rb ions AND diagram includes a representation of delocalised electrons.
L1 · 1 mark · Labels the ions (Rb) AND labels the sea of delocalised electrons.
Worked solution
Draw a repeating pattern of labelled Rb ions and illustrate surrounding sea of delocalised electrons. Add appropriate labels.