Multiple Choice
When sodium forms its common ion, Na^+, how many protons and electrons does it have?
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- 1. Intro to General Chemistry3h 48m
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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 on the iron ion in Fe_2S_3?
A
+2
B
+3
C
+1
D
+4
Verified step by step guidance1
Identify the overall charge of the compound Fe_2S_3, which is neutral (0 charge) because it is a neutral compound.
Recall the common charge on the sulfide ion (S), which is typically -2.
Set up an equation to represent the total charge balance: let the charge on each iron ion be x. Since there are 2 iron ions and 3 sulfide ions, the total charge is 2x + 3(-2) = 0.
Simplify the equation: 2x - 6 = 0.
Solve for x to find the charge on each iron ion: 2x = 6, so x = +3.
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