8172 · · · 8172 · · Code (Short Name / Abbr) 8172 · · Long Name 5 · · Number of Characters Four Corner Code · · Property Characters · 钉 cjk unified ideograph | nail, spike; pursue closely U+9489 钙 cjk unified ideograph | calcium (element 20, Ca) U+9499 钶 cjk unified ideograph | columbium U+94B6 锕 cjk unified ideograph | actinium (Ac) U+9515 镉 cjk unified ideograph | cadmium (element 48, Cd) U+9549