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- #Chemistry
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- #Classification of elements and periodicity in properties
Atomic size increases down the group. The same is attributed to
Option: 1
Increase in number of orbit
Option: 2
Increase in number of protons and neutrons
Option: 3
Increase in number of protons
Option: 4
Increase in number of protons, neutrons and electrons
Answers (1)
As we move down the group, but there is an additional inner shell comes between the
nucleus and the valence shell electrons. Due to an additional inner shell, the valence
shell electrons are losely bound to the nucleus causing the increase in atomic size.
Hence Option 1 is correct.
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