C: 18 1s²2s²2p⁶3s²3p⁴
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An ion with a charge of 2- contains 10 electrons and 14 neutrons. What is its nucleon number?
Use of the Data Booklet is relevant to this question. What could be the proton number of an element that has three un…
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What can be seen when a piece of magnesium ribbon is placed in cold water?
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