The potential energy of a diatomic molecule is given by $U = \frac{A}{{{r^{12}}}} - \frac{B}{{{r^6}}}$ . $A$ and $B$ are positive constants. The distance $r$ between them at equilibrium is
The potential energy of a diatomic molecule is given by $U = \frac{A}{{{r^{12}}}} - \frac{B}{{{r^6}}}$ . $A$ and $B$ are positive constants. The distance $r$ between them at equilibrium is
- A
${\left( {\frac{A}{B}} \right)^{1/6}}$
- B
${\left( {\frac{{2A}}{B}} \right)^{1/6}}$
- C
${\left( {\frac{A}{{2B}}} \right)^{1/6}}$
- D
None of these
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