In some browsers, after entering your weight you may have to click outside the text entry box to make the calculation work. Elements for which there are no data will always give a value of zero for the weight, no matter what you put in the weight box. Here are a few notes about the hazards and risks associated with tellurium. Fortunately, tellurium compounds are encountered rarely by most people. All tellurium compounds are highly toxic.
Tellurium compounds are teratogenic.
Tellurium compounds should only be handled by competent chemists since ingestion in even small amounts causes dreadful smelling breath and appalling body odour.