Name the element in each of the following cases: (i) A bivalent anion of the element having 10 electrons (ii) A trivalent cation of the element having 10 electrons. What is the relationship between the two ions called ?

Name the element in each of the following cases: (i) A bivalent anion

1.	Name the element in each of the following cases: (i) A bivalent anion of the element having 10 electrons (ii) A trivalent cation of the element having 10 electrons. What is the relationship between the two ions called ?
Answer» Solution :(i) OXYGEN (II) ALUMINIUM The two ions are called isoelectronic. `(O^(2-) = 8 + 2 = 10, Al^(3+) = 13 - 3 = 10)`