what is hiliyam???
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A very light colourless gas which doesn't burn, often used to fill in objects which flows in air...
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hey mate is not hiliyam it is helium. it is a noble gas. also called inert gas. it has two electrons two protons and two neutrons. it is a balanced gas. its atomic number is 2 and atomic mass is 4.it is the second element on the periodic table. and the first noble Gas or inert gas.
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