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Q.
The boiling point of calcium is abnormally high as compared to barium because
The s-Block Elements
Solution:
The electronic configuration of calcium is $1 s ^{2} 2 s ^{2} 2 p ^{6} 3s ^{2} 3p ^{6} 4s ^{2} .$ As such due to empty d-orbital calcium forms strong metallic bond. Hence its boiling point is high.