Question
Tue February 26, 2013 By: Akriti

An element has electronic configuration 2,1 and another element has electronic configuration 2,8,1. Which of them forms more number of compounds and why?

Expert Reply
Wed February 27, 2013
Second one is far more reactive because it's bigger. 

Its outermost (valence) electron is shielded much more than in lithium, so it takes much less energy to donate it when reacting.
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