 Re: School
lol... sounds similiar to wad i seen at the hotel. the pool there got a sign say " welcome to our ool, notice there is no 'p' in it, so pls keep it away" 
Technetium is the lightest chemical element with no stable isotope. It has atomic number 43 and is given the symbol Tc. The chemical properties of this silvery grey. Its is used in nuclear medicine for a wide variety of diagnostic test. Also use as an anodic corrosion inhibitor for steel.
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