Multiple Choice
Which of the following best explains why the Na^+ ion is smaller than a neutral Na atom?
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2. Atoms & Elements
Ions
Struggling with General Chemistry?
Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
What is the charge of an ion that has 12 protons and 10 electrons?
A
0
B
+2
C
+1
D
-2
Verified step by step guidance1
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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