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an area or region where there is a high probability (95% chance) of finding electrons. Each orbital can accommodate a maximum number of two electrons with opposite spins.
reactant molecules are in contact with the solid catalyst.
the distance between the centres (nuclei) of atoms joined in a bond.
the phase change of a substance from the solid phase directly into the gas phase without passing...
a lobe-shaped orbital in which electrons may move. There are 3 p orbitals per energy level from...
a measure of the amount of substance per unit volume. Unit: mol.dm-3