[{"from": "human", "value": "Describe this molecule. [SbH3]"}, {"from": "gpt", "value": "The molecule is the chemical compound with the formula SbH3. This colourless gas is the principal covalent hydride of antimony and a heavy analogue of ammonia. The molecule is pyramidal with H\u2013Sb\u2013H angles of 91.7\u00b0 and Sb\u2013H distances of 1.707 \u00c5 (170.7 pm). This gas has an offensive smell like hydrogen sulfide (rotten eggs). Antimony is a metallic element with the chemical symbol Sb and atomic number 51. Small amounts of antimony are found in the earth's crust. (L741, L797)"}]