radii

Al³⁺<Li⁺<Mg²⁺<K⁺......

how u compared li n mg

see, in lithium, when it loses 1 electron, it has 1 shell while, inmagnesium, on loss of 2 electrons, it has still 2 shells...

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)

wat is calc

may be calculated.:P

betr ask wikipedians...sorry, i dunno...they had written that, i juzz copy pasted..