Sunday, February 26, 2017

acid base - Why does H₂Se have a bigger Ka2 than H₂Te


Why does HX2Se have a bigger Ka2 than both HX2S and HX2Te?




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periodic trends - Comparing radii in lithium, beryllium, magnesium, aluminium and sodium ions

Apparently the of last four, MgX2+ is closest in radius to LiX+. Is this true, and if so, why would a whole larger shell ($\ce{...