what is helium give some examples
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Helium is a chemical element with the symbol He and atomic number 2 and It is used as an inert shield for arc welding, to pressurize the fuel tanks of liquid fueled rockets and in supersonic windtunnels.
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alkynes these have at least one carbon tribal bond along with single bonds their general formula is CN h2n -2 organic compounds with same molecular formula but structural formula and COD isomers the phenomena is called ISO marriage made the functional group such as alcohol LD heights and carboxylic acids decide characteristics properties of the carbon compound that are contained them
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