Below is the Aufbau diagram of an unknown atom. Study the diagram and answer
the following questions.
4.1 Define the term atomic number. (1)
Use the Aufbau diagram of an unknown atom above to answer the following
questions.
4.2 In which group and period is the atom in the diagram above? (2)
4.3 
4.4 How will the neutrality of the above atom change if it loses electron(s)? (1)
4.5 Write down the sp notation of an ion for the atom represented by the
Aufbau diagram above. (2)
4.6 What will happen to the number of protons if the above atom loses electron(s)
to become an ion?
Write down INCREASE, DECREASE or UNCHANGED. (1)
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