phosphorus, a chemical element with symbol P and atomic number 15
Which periodic element (a pure chemical substance consisting a single type of atom, distinguished by the number of protons in the atoms' nucleii) is a substance that is a constituent in a typical member of the class that is a type of acid (chemical compound forming a solution in water with a pH of less than 7.0)?
Evi, is our best selling mobile app that turns your phone into a mobile assistant. Over the next few months we will be adding all of Evi's power including local information on shopping, restaurants and more... to this site.
Until then, to experience all of the power of Evi now, download the Evi app for iOS or Android here.