Examlex
Determine the number of protons and the number of neutrons in an atom of Rb-85.
Energy Source
A resource that provides power for heat, light, or motion, or fuel for organisms' metabolic processes.
Leaf Color
The color of leaves, determined by pigments such as chlorophyll and anthocyanins, and indicative of health or seasonal changes.
Autumn
A season of the year following summer and preceding winter, characterized by the cooling of temperatures and the falling of leaves from deciduous trees.
Jan Baptista Van Helmont
A 17th-century Flemish scientist known for his work in chemistry, physiology, and medicine, and for pioneering work on gases.
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Q79: Determine the number of protons and neutrons
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