The-Process<span> by which certain </span>unstable atoms<span> or </span>elements<span> undergo </span>spontaneous<span> .... an unstable radioactive </span>nucleus<span> is</span>converted<span> to a stable </span>nucleus<span> (3 words). transmutation. (physics) the change of one chemical</span>element into another<span> (as by nuclear ...</span>
