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Posted

WHAT IS 2+2 ?? DOES ANYONE KNOW?

 

 

 

I need help with this...

 

 

Thank you very much for your time and it is greatly appreciated...

 

Have a wonderful day..

Posted

Could this have to do with symmetry rules for cycloadditions in quantum chemistry? This might be way off base but that is one context in which I've seen those types of notation used.

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