Multiple Choice
What is the charge of a chloride ion?
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2. Atoms & Elements
Ions
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If a droplet has three extra electrons, what is the net charge of the droplet?
A
+1e
B
-1e
C
-3e
D
+3e
Verified step by step guidance1
Recall that the charge of a single electron is represented as $-1e$, where $e$ is the elementary charge (approximately $1.602 \times 10^{-19}$ coulombs).
Understand that having extra electrons means the droplet has additional negative charges, since electrons carry a negative charge.
Calculate the net charge by multiplying the number of extra electrons by the charge of one electron: $\text{net charge} = (\text{number of extra electrons}) \times (-1e)$.
Substitute the given number of extra electrons (3) into the equation: $\text{net charge} = 3 \times (-1e)$.
Conclude that the net charge of the droplet is $-3e$, indicating a negative charge three times the elementary charge.
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