Drawing diagrams of electronic configurations
2 marks · EasyAn atom has atomic number 6. Calculate the number of electrons in each shell and write its electronic configuration.
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2, 4
Also accept: First shell = 2, second shell = 4
Common mistakes: Wrong split (e.g., 3,3)
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Marking points
M1 · 1 mark · States correct split of electrons in shells (first 2, rest 4 in second shell).
A1 · 1 mark · Gives final electronic configuration: 2, 4. (follow-through)
Worked solution
First shell: can hold 2 electrons. So put 2 in first shell. Total is 6, so 4 left for second shell. Electronic configuration is 2, 4.