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Choose the species with 15 protons and 18 electrons
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4 votes
Choose the species with 15 protons and 18 electrons

User Ovasylenko
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2 Answers

3 votes
The answer is phosphorus because the Atomic Number is the same as protons which is 15.

Hope this helps
User BA TabNabber
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6.9k points
4 votes
Its Phosphorus with a negative 3 charge. 
User YaroslavTir
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6.2k points
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