Multiple Choice
How many electrons does a chlorine atom gain to achieve a stable electron configuration?
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2. Atoms & Elements
Ions
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How many electrons does the Al^{3+} ion possess?
A
16
B
3
C
13
D
10
Verified step by step guidance1
Identify the atomic number of aluminum (Al), which represents the number of protons and, in a neutral atom, also the number of electrons. For Al, the atomic number is 13.
Understand that the Al^{3+} ion has lost 3 electrons compared to the neutral atom because of the 3+ charge.
Calculate the number of electrons in the Al^{3+} ion by subtracting the charge (3) from the number of electrons in the neutral atom (13): $13 - 3$.
Recognize that the resulting number is the total electrons remaining in the Al^{3+} ion.
Confirm that the Al^{3+} ion has 10 electrons after losing 3 electrons from the neutral aluminum atom.
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