Which has a stronger polarising force #Li^+# or #Be^(2+)#?

1 Answer
anor277
May 20, 2017

Which cation is (i) smaller; and (ii) which has the higher nuclear charge?

Explanation:

And of course the answer is #Be^(2+)# on both counts. And thus we predict that #Be^(2+)# is the stronger polarizer. I have no data with respect to #Be-C# or #Li-C# bond lengths. Dialkyl berylliums, the which would be fiendishly reactive, would tend to be more molecular than lithium alkyls, which are oligomeric.

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