11. Choose two elements that exhibit the lowest oxidation state, equal to -3 5) Cl IDIN 3) As 4) Al Answer (score:V) Answer (score: 1):

The correct answer is 3) As and 4) Al.<br /><br />Explanation:<br />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 can be positive, negative, or zero.<br /><br />In the given options, the oxidation states of the elements are as follows:<br />- Cl (Chlorine) has an oxidation state of -1.<br />- IDIN is not a recognized element symbol, so it cannot be considered.<br />- As (Arsenic) has an oxidation state of -3.<br />- Al (Aluminum) has an oxidation state of +3.<br /><br />Therefore, the two elements that exhibit the lowest oxidation state, equal to -3, are As (Arsenic) and Al (Aluminum).