Question

Lead has been placed in group $1^{st}$ group and $2^{nd}$ because:

• A. it shows the valency one and two
• B. it forms insoluble $PbC{l}_2$
• C. it forms lead sulphide
• D. its chloride is partl soluble in water

Answer 1

The correct option is D its chloride is partl soluble in water

Lead has been placed in group $1^{st}$ and $2^{nd}$ because lead chloride is slightly soluble in water and therefore, lead is never completely precipitated by adding dilute $HCl$ to a sample; the rest of the lead ions are precipitated with $H_{2}S$ in acidic medium.