(i) It is a colourless gas having unpleasant garlic – like odour or rotten fish odour.
(ii) It is heavier than air and sparingly soluble in water.
(iii) It liquefies at – 89 degree C and solidifies at – 134 degree C.
(iv) It is poisonous in nature.
Structure of phosphine
Phosphine is a covalent molecule. It has pyramidal structure like ammonia.
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