Thallium (Gr. thallos, a green shoot or twig, Tl; at. wt. 204.3833(2); at. no. 81) is treated as a hazardous substance. Sir William Crookes discovered thallium spectroscopically in 1861. The metal is very soft and malleable and can be cut with ...

  • Loading...
locked icon

Sign in to access this content

Get a 30 day FREE TRIAL

  • Watch videos from a variety of sources bringing classroom topics to life
  • Read modern, diverse business cases
  • Explore hundreds of books and reference titles