Multiple Choice
Which ion would bond with a calcium ion (Ca^{2+}) to form a neutral ionic compound?
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2. Atoms & Elements
Ions
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Which ion is formed when an atom has 26 protons and 24 electrons?
A
Fe^{2+}
B
Fe^{4+}
C
Fe^{+}
D
Fe^{2-}
Verified step by step guidance1
Identify the element by its number of protons. Since the atom has 26 protons, it corresponds to the element iron (Fe), because the atomic number of iron is 26.
Determine the charge of the ion by comparing the number of protons and electrons. The charge is calculated as: $\text{Charge} = \text{Number of protons} - \text{Number of electrons}$.
Substitute the given values into the charge formula: $\text{Charge} = 26 - 24$.
Calculate the net charge to find the ion's charge. Since there are more protons than electrons, the ion will have a positive charge equal to the difference.
Write the ion symbol by combining the element symbol (Fe) with the charge as a superscript, indicating the magnitude and sign of the charge (for example, $Fe^{2+}$ if the charge is +2).
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