Recommendations
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* Precision

* Electronic Configuration

  * Spin-unrestricted versus spin-restricted, Spin states

* What basis set should I use in ADF?

  * ZORA or non-relativistic calculation?

  * Large or small molecule?

  * Frozen core or all-electron?

  * Diffuse functions needed?

  * Normal or even-tempered basis?

  * Recommendations for Double-hybrids and MP2

  * What accuracy do the basis sets give?

* Relativistic methods
