Arrange the following elements in the descending order of atomic size and give a reason for your answer. Mg, Cl,P, Ar.
Arrange the following elements in the descending order of atomic size and give a reason for your answer.
Mg, Cl,P, Ar.
(Atomic numbers of the above elements are 12, 17 ,15, 18 respectively)
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Mg, P, Cl, Ar.
Increase in atomic number means an increase in nuclear charge which tends to pull the electrons closer to the nucleus and reduces the size of the atom.
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