<Li> Bone - ash, calcium phosphate, is used in the production of fine china . </Li> <Li> Phosphoric acid made from elemental phosphorus is used in food applications such as soft drinks, and as a starting point for food grade phosphates . These include mono - calcium phosphate for baking powder and sodium tripolyphosphate . Phosphates are used to improve the characteristics of processed meat and cheese, and in toothpaste . </Li> <Li> White phosphorus, called "WP" (slang term "Willie Peter") is used in military applications as incendiary bombs, for smoke - screening as smoke pots and smoke bombs, and in tracer ammunition . It is also a part of an obsolete M34 White Phosphorus US hand grenade . This multipurpose grenade was mostly used for signaling, smoke screens, and inflammation; it could also cause severe burns and had a psychological impact on the enemy . Military uses of white phosphorus are constrained by international law . </Li> <Li> In trace amounts, phosphorus is used as a dopant for n - type semiconductors . </Li>

Which element has chemical properties the most similar to phosphorus (p atomic number 15)