To have a negative ion, you must have:
A)taken away a proton from the nucleus.
B)added a positron to the nucleus.
C)added a positron to the outer electron shell.
D)added an electron to the outer electron shell.
E)None of these; only positive ions can exist in nature.

Question

Quizplus · Accepted Answer

To have a negative ion, an electron must be added to the outer electron shell of an atom, giving it a negative charge. Choice A would create a positive ion, while choice B would result in a different isotope of the same element. Choice C is not possible since adding a positron (a positive electron) would also result in a positive ion. Choice E is incorrect, as negative ions do exist in nature, such as chloride ion (Cl-) and nitrite ion (NO2-). To have a negative ion, you need to add an electron to the outer electron shell.

To Have a Negative Ion, You Must Have