A particle (atom) has potential energy U= a/(r^6) - b/(r^12) relative to the interatomic distance r, the effective stiffness of the molecular spring is given by 6x(a/(2b))^(4/3) , then the value of x is ……..

A particle (atom) has potential energy U= a/(r^6) - b/(r^12) relative

1.	A particle (atom) has potential energy U= a/(r^6) - b/(r^12) relative to the interatomic distance r, the effective stiffness of the molecular spring is given by 6x(a/(2b))^(4/3) , then the value of x is ……..
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