Scelta multipla
When forming a monatomic ion from a neutral atom, how many electrons can be removed at one time in a single ionization step?
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2. Atoms & Elements
Ions
Scelta multipla
Which of the following best explains why the chloride ion has a -1 charge?
A
It has gained one electron compared to a neutral chlorine atom.
B
It has lost one proton compared to a neutral chlorine atom.
C
It has lost one electron compared to a neutral chlorine atom.
D
It has gained one proton compared to a neutral chlorine atom.
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Recall that the charge of an ion is determined by the difference between the number of protons (positive charges) and electrons (negative charges).
Understand that a neutral chlorine atom has an equal number of protons and electrons, resulting in no net charge.
Recognize that gaining an electron adds a negative charge, while losing an electron removes a negative charge.
Since the chloride ion has a -1 charge, it must have one more electron than the neutral chlorine atom, because electrons carry a negative charge.
Therefore, the chloride ion's -1 charge is best explained by it having gained one electron compared to a neutral chlorine atom.
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