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A-level Chemistry Year 1
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Which of the statement(s) below is/are true?
1) An 27Al3+ ion contains 14 neutrons and 10 electrons
2) An 16O2- ion contains 8 neutrons and 6 electrons
3) A 14N3- ion contains 7 neutrons and 7 electrons
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What is the electron configuration for an Mg
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The electron configuration of element X is: 1s22s22p63s23p4
What is the formula of a compound formed when sodium reacts with element X?
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