Question

Chloride of an element A gives neutral solution in water. In the periodic table the element A belongs to

• A. First group
• B. Third group
• C. Fifth group
• D. First tansition series

Answer 1

The correct option is A First group

Aqueous solution of salt of strong acid and strong base is neutral. $2M+C{l}_2\to 2MCl$ , $MCl+H_{2}O\to HCl+MOH\text{(strong acid + strong base)}$
where M is the metal atom.So, the solution is neutral.
Therefore, element A may belong to the first group. NaCl is an example for such kind of salt.