al<mg<li<k
arrange in the order of increasing radii
Li+ , Mg2+ , K+, Al3+
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12 Answers
see, in lithium, when it loses 1 electron, it has 1 shell while, inmagnesium, on loss of 2 electrons, it has still 2 shells...
hey bt mg n lithium have approx same size .it s diagonal relationship na
its same polarizing power...size concept later..
and 1 thing more...its comparable, and not similar...mg has big...think wid common sense , how can it b same, while it has 1 more shell!!!!
but, yes, they r comparable...let me check out on wikepedia whatz the size of both....
al < li < mg < k as given by brilliant ( with appropriate + ve charges)
Mg
Atomic radius 150 pm
Atomic radius (calc.) 145 pm
Li
Atomic radius 145 pm
Atomic radius (calc.) 167 pm
source:wikipedia
may be calculated.:P
betr ask wikipedians...sorry, i dunno...they had written that, i juzz copy pasted..