11. Select two elements that exhibit the lowest oxidation state -4 1) Si 2) Ar 3) As 4) P 5) C Answer (score:1):

The oxidation state of an element is a measure of the degree of oxidation of an atom in a compound. It is defined as the charge that an atom would have if the compound was composed of ions. The oxidation state of an element can vary depending on the compound in which it is found.<br /><br />In the given options, the elements that exhibit the lowest oxidation state are:<br /><br />1) Si (Silicon): Silicon typically exhibits an oxidation state of +4 in its compounds. However, it can also exhibit a lower oxidation state of +2 in certain compounds, such as in silicon dioxide (SiO2).<br /><br />2) Ar (Argon): Argon is a noble gas and is generally unreactive. It does not typically form compounds, so it does not have a defined oxidation state.<br /><br />Therefore, the two elements that exhibit the lowest oxidation state are Si and Ar.