Bases are proton acceptors.
Substances with a pH greater than 7 are considered to basic. Positively charged beta particles are positrons and negatively charged beta particles are Electron electrons . Beta particles can cause burns and are harmful to living tissues, however, protection is afforded by a thin sheet of metal. Ionic Radius Ionization Potential Mass Average Melting Point Name Periodic Table Series Symbol Thermal Conductivity Year of Discovery Search the Web.