Respuesta :
An element in the same row with roughly half of the atomic mass always has a greater atomic radius.
Atomic radius: Â It is the distance between the nucleus and the outermost shell.
Atomic mass: It is the mass or the number of nucleons or protons and neutrons inside an atom.
In a row, the number of protons increase but the number of shells remains constant.
Hence, the positive protons in the nucleus attract electrons with more electrostatic force.
Therefore, Â an element in the same row with roughly half of the atomic mass always has a greater atomic radius.
To know more about Atomic radius:
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