Multiple Choice
Which of the following ions is not isoelectronic with the others?
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2. Atoms & Elements
Ions
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Which of the following best describes an atom with a negative net charge?
A
An atom that has gained one or more electrons
B
An atom with an equal number of protons and electrons
C
An atom that has lost one or more electrons
D
An atom with more protons than electrons
Verified step by step guidance1
Recall that an atom is composed of protons (positively charged), electrons (negatively charged), and neutrons (neutral). The net charge of an atom depends on the balance between protons and electrons.
Understand that if an atom has a negative net charge, it means the total negative charge from electrons exceeds the total positive charge from protons.
Recognize that gaining one or more electrons increases the number of negatively charged particles, resulting in a negative net charge.
Contrast this with losing electrons, which would reduce negative charge and create a positive net charge, and having equal numbers of protons and electrons, which results in a neutral atom.
Therefore, the best description of an atom with a negative net charge is one that has gained one or more electrons.
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