What element has 81 protons in the nuclei of its atoms?
Answer (2)
Tl = thallium
look at the periodic table look for element number 81 on the periodic table and that's TI
It's mass number is 204.38
Thallium (Tl) is the element that has 81 protons in its nucleus, which corresponds to an atomic number of 81. It is found in group 13 of the periodic table, below Indium and above Lead. Thallium is known for its metallic properties and has various applications, although its compounds are toxic.
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