The half water molecule is present in Plaster of Paris as
(a) One molecule of Plaster of Paris has half a molecule of water.
(b) Two molecules of Plaster of Paris share one molecule of water.
(c) Water is attached to the molecule of Plaster of Paris.
(d) The water of crystallization is present in half.
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Explanation:
Answer. In plaster of paris two formula units of CaSO4 share one molecule of water. In the formula it is written as half water molecule because in the formula we are showing only one unit of CaSO4.
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