객관식
What is the name given to an atom that gains or loses electrons in a chemical reaction?
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2. Atoms & Elements
Ions
객관식
What is the charge of the chloride ion?
A
-1
B
-2
C
+1
D
0
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검증된 단계별 안내1
Recall that a chloride ion is formed when a chlorine atom gains electrons to achieve a full outer electron shell, similar to the nearest noble gas configuration.
Understand that chlorine (Cl) is a halogen with 7 valence electrons and needs 1 more electron to complete its octet.
When chlorine gains 1 electron, it becomes a chloride ion (Cl⁻), which carries a negative charge due to the extra electron.
The charge of the chloride ion is therefore negative and specifically -1, because it has one more electron than protons.
Compare the options given: -1, -2, +1, and 0; the correct charge for the chloride ion is -1.
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