Q 3102701638.     'The statements given below arc the postulates of
various atomic models. Arrange then in their
chronological order.
( 1) Fine structure is due to the presence of subshells
in the main energy level.
(2) The size of an atom is much larger than the size
of its nucleus.
(3) As long as the electron is present in a particular
orbit, its energy remains constant.
(4) Negatively charged particles are uniformly
spread in the lump of positive charge.

A

4, 3, 2,1

B

2, 3, 4, 1

C

4, 2, 3, 1

D

3, 4, 2, 1

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