Antimony is a chemical element that is available in both metallic and non-metallic forms. The bright silver form of antimony is metallic and is generally made up of a brittle material, while the non-metallic form of antimony is present in the form of grey powder. Antimony is generally a stable element in dry air and does not react with acids and alkalis. Antimony is available freely in nature and can be extracted from ores like valentinite and stibnite.