When two compounds have same molecular formula but different structural formula, they are said to be
isomers of each other and this phenomenon is called as
isomerism.
Hexane has
six isomers.
The isomers of hexane have a difference in their structure due to parent chain length (
chain isomerism). They are also differentiated on the basis of straight chain as in n-hexane and branched chain as in remaining five. Structures along with names are shown below.
I think it's hydrogen. Hope this helps :)
.5s
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Ernest Rutherford discovered the nucleus. This enabled other scientists to create a model in which electrons fly around the nucleus similarly to how the solar system works.