Question

(a) What is an ion ? How is an ion formed ? Explain with the help of two examples of different ions.
(b) The valencies (or charges) of some of the ions are given below Ion
Valency (Charge)
Ion
Valency (Charge)
Sodium ion
1+
Bromide ion
1â
Ammonium ion
1+
Hydroxide ion
1â
Calcium ion
2+
Sulphate ion
2â
Lead ion
2+
Phosphate ion
3â
Using this information, write down the formulae of the following compounds (i) Sodium phosphate
(ii) Ammonium sulphate
(iii) Calcium hydroxide
(iv) Lead bromide

Answer 1

Answer:

ions are formed when add or remove any electron to an atom

there two types of ion

1.cation

2. anion