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.

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.

asked Mar 4, 2023 128k views

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