Question

what is an atom? In what unit radius is measured?​

Answer 1

The atomic radius (r as it is radius shortform) of an atom can be defined as one half the distance (d shortform) between two nuclei in a diatomic molecule. Atomic radii have been measured for elements.The units for atomic radii are picometers, equal to 10−12 meters

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Answer 2

Answer:

What is an atom :the smallest particle of a chemical element that can exist.

what unit radius is measured? :The atomic radius (r) of an atom can be defined as one half the distance (d) between two nuclei in a diatomic molecule. Atomic radii have been measured for elements. The units for atomic radii are picometers, equal to 10−12 meters.

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