please i need the answer within five minutes

label Chemistry
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schedule 1 Day
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Write the symbol for the atom or ion that has 15 protons, 15 neutrons and 18 electrons. Enter your answer with the mass number followed by the symbol of the element followed by any charge on the ion.

Dec 25th, 2014

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Dec 25th, 2014

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Dec 25th, 2014
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Dec 25th, 2014
Sep 23rd, 2017
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