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Physical Science
Pretest
Question 7
7
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Multiple Choice
Pretest
Question 7 • Physical Science
A potassium atom (atomic number 19) loses an electron while forming a bond with another atom. Which best describes the potassium ion that forms?
Answer
A
It is a positive ion that has one more valence electron than a neutral potassium atom.
B
It is a negative ion that has one more valence electron than a neutral potassium atom.
C
It is a negative ion that has one less valence electron than a neutral potassium atom.
D
It is a positive ion that has one less valence electron than a neutral potassium atom.
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