CBSE Class 12-science Answered
Arrange these in the order of their increasing sizes
Na+ , Cl , Mg2+ , Al3+
Eplain with valid reasons plz .. I am in desperate need of help in here
Asked by GeoffreyRichards | 10 Nov, 2010, 09:17: AM
Expert Answer
Correct order is :Na+> Mg2+ > Al3+ > Cl
According to the common perception, the size of Na+,Mg2+, Al3+ should be same as their number of electrons are same but the factor which you need to consider that nuclear charge increases and shielding effect decrease as we go from left to right, if nuclear charge increased and shielding effect decrease than atomic size decreses.
Answered by | 10 Nov, 2010, 05:30: PM
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