oxidation number

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Noun1.oxidation number - the degree of oxidation of an atom or ion or molecule; for simple atoms or ions the oxidation number is equal to the ionic charge; "the oxidation number of hydrogen is +1 and of oxygen is -2"
number - a concept of quantity involving zero and units; "every number has a unique position in the sequence"
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The UV-Vis spectra of the transition metal with partially filled d-orbital are generally characterized by charge-transfer (CT) bands which involve an electron transfer from M to L during optical excitation by which the oxidation number of central ion is changed by on, while the ligand field bands correspond to the same oxidation number in the excited and the ground state [12, 13].
Owing to the reducing nature of thiols, changes in the metal oxidation number were also possible before precipitation.
This novel arrangement seems to change the palladium atom's so-called oxidation state, or oxidation number.