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
Answer:
C. Uranus, Neptune, and Pluto
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The necleus has a positive charge because the proton's are found there
Answer:
In simplest terms, water makes up about 71% of the Earth's surface, while the other 29% consists of continents and islands.
Explanation: