Proton NMR - equivalent H's and splitting

[princecoup]

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hey all - this may be a rudimentary question, but why does this molecule have 4 equivalent H's?

is it equivalent because the 2 H's of each methylene (-CH2) groups see the same things on each side? then is it fair to say that equivalent H's are found wherever there is a plane of symmetry since rotation of these H's would not change the molecule?

thanks!

 

[themuffinman11]

Yeah, I think it's safe to say that if there's a plane of symmetry, then the Hydrogens will be equivalent