Saturday, July 28, 2018

nomenclature - Is there a word for a compound that has both ionic and covalent bonds?


For example, calcium carbide (CaC2) has covalent C‒C bonds and ionic Ca2+‒ C2−2 bonds.




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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{...