객관식
Which of the following best explains why the Na^+ ion is smaller than a neutral Na atom?
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- 1. Intro to General Chemistry3h 46m
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2. Atoms & Elements
Ions
Multiple Choice
What is the charge of an ion that has 12 protons and 10 electrons?
A
0
B
+2
C
+1
D
-2
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검증된 단계별 안내1
Identify the number of protons and electrons in the ion. Here, the ion has 12 protons and 10 electrons.
Recall that protons carry a positive charge of +1 each, and electrons carry a negative charge of -1 each.
Calculate the total positive charge from protons: \(12 \times (+1) = +12\).
Calculate the total negative charge from electrons: \(10 \times (-1) = -10\).
Find the net charge of the ion by adding the total positive and negative charges: \(+12 + (-10) = +2\). This means the ion has a charge of +2.
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