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the element was name protactinium
Pure europium metal in glass ampules
This 2" Watch Face Cube has an authentic watch face enclosed in crystal-clear Lucite acrylic for a timeless
High concentrations of elemental chlorine gas are extremely dangerous and poisonous to most living organisms
Californium Element Cube Historical Artifacts the element was name protactiniumCalifornium's atomic number is 98 and its symbol is Cf. It is an actinide element, the sixth transuranium element to be synthesized, and has the second highest atomic mass of all the elements that have been produced in amounts large enough to see with the unaided eye. Californium is one of the few transuranium elements that have practical applications. Most of these applications exploit the property of certain isotopes of californium to emit neutrons.
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