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Which alkaline earth halides are covalent rather than ionic?
AThose of calcium
BThose of barium
CThose of strontium
DBeCl2, BeBr2 and BeI2
Answer & Solution
Correct answer: D. BeCl2, BeBr2 and BeI2
Small, highly charged Be2+ polarises halide ions strongly, giving covalent bonds.
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