What is the correct separable Schrödinger equation in spherical coordinates?
Some articles use this formula: $$ \Psi(r,\theta,\phi) = R(r) . \Theta(\theta) . \Phi(\phi) $$
And$$ \Psi(r,\theta,\phi) = R(r)\cdot\Theta(\theta)\cdot \Phi(\phi), $$ and some of them are useduse:
$$ \Psi(r,\theta,\phi) =\frac{R(r) . \Theta(\theta) . \Phi(\phi) }{r} $$ $$ \Psi(r,\theta,\phi) =\frac{R(r)\cdot \Theta(\theta)\cdot \Phi(\phi) }{r}. $$
So which is true?