1. In quantum chemistry, the subset of molecular orbitals and electrons included in a computational model, excluding core electrons that are assumed not to participate in chemical bonding or reactions
The active space in this calculation includes the valence electrons and orbitals.
O espaço ativo neste cálculo inclui os elétrons de valência e os orbitais.
2. In a broader context, a designated area or region that is functional, operational, or available for use
The gym's active space allows members to exercise freely.
O espaço ativo da academia permite que os membros se exercitem livremente.