Multiple Choice
Which of the following species has the same number of protons as Fe^{3+}?
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Multiple Choice
What is the net charge of a monatomic ion that has 15 protons and 18 electrons?
A
+1
B
-3
C
+3
D
-1
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Verified step by step guidance1
Identify the number of protons and electrons in the ion. Here, the ion has 15 protons and 18 electrons.
Recall that the charge of an ion is determined by the difference between the number of protons (positive charges) and electrons (negative charges).
Use the formula for net charge: \(\text{Net charge} = (+1) \times \text{number of protons} + (-1) \times \text{number of electrons}\).
Substitute the given values into the formula: \(\text{Net charge} = (+1) \times 15 + (-1) \times 18\).
Calculate the difference to find the net charge, which will indicate whether the ion is positively or negatively charged and by how much.
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