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CSEE (Form 4) The Atom — practice questions

4 free MCQs with worked solutions. Tap any question for the answer + explanation, or practice them all in the app.

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What does the atomic number of an element count?Two atoms of the same element hold different numbers of neutrons. What are these two atoms?What are the electrons in the outermost energy level of an atom called?Why do the noble gases hardly react with any other element?