Predict the ion formed by each element.(a) Rb(b) K(c) Al(d) O

Solution 85P

Here, we are going to identify the ion formed by each of the given elements.

Step 1:

Ions are formed by the loss or gain of electrons. An ion is a charged particle and can be negatively or positively charged. A negatively charged ion is called an ‘anion’ and is formed by gain of electrons and the positively charged ion is called a ‘cation’ and is formed by the loss of electrons.

The number of charges in the ion indicate the number of electrons lost or gained.

For example, Na+  has one positive charge. Here, the positive charge indicates loss of electron and the number of charge (1) indicates loss of one electron.