Oxidation number?

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If the oxidation of an element changes from 2- to 0 during a reaction it has gained or lost how many electrons?

2007-03-06 10:11:52 · 2 answers · asked by William R 1 in Science & Mathematics ➔ Chemistry

2- means that that element had 2 extra electrons, then once it went to 0 it lost thoes 2 electrons.

2007-03-06 10:32:46 · answer #1 · answered by kay 2 · 0⤊ 0⤋

It has lost two electrons. Consider the change from H2S ===> S . Sulfur is oxidized.

2007-03-06 18:27:58 · answer #2 · answered by steve_geo1 7 · 0⤊ 0⤋