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Ninety-nine percent of the mass of an atom is located in? a. the outermost energy level. b. the first energy level. c. the electron clouds. d. the nucleus.
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Ninety-nine percent of the mass of an atom is located in?

a. the outermost energy level.

b. the first energy level.

c. the electron clouds.

d. the nucleus.

User Nikola Nikolov
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3.6k points

1 Answer

4 votes

Answer:

the nucleus.

Step-by-step explanation:

Because there is all the protons and neutrons are in the nucleus.

User Idancali
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4.3k points
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