213Bi is an isotope of actinium. ... This means actinium does indeed kill cancer cells, but eventually new mutations may form. Actinium 227 is very radioactive and as dangerous as plutonium when speaking of radiation-induced health issues. Ingesting even small quantities is a serious hazard to health.

What does actinium feel like?

Actinium is a soft, silvery-white radioactive metal. It glows blue in the dark because its intense radioactivity excites the air around it.

What does actinium react with?

Actinium itself glows in the dark and reacts with water to produce hydrogen gas. It also reacts with air and acids, but not bases. It is used in thermoelectric power sources and also used in neutron emitters. The most stable isotope of actinium has a half-life 21.8 years.