Question

Radioactive decay will occur as follows:
$_{86}^{220}Rn→_{84}^{216}Po+_2^4He$; Half life = 55s
$_{84}^{216}Po→_{82}^{216}Pb+_2^4He$; Half life = 0.66s
$_{82}^{812}Pb→_{82}{212}BL+λ^oe$; Half life = 10.6 h
If a certain mass of radon (Rn=220) is allowed to decay in a certain container; then after 5 minutes the element with the greater mass will be

• A. radon
• B. polonium
• C. lead
• D. bismuth

Answer 1

Answer: (C)

lead

Answer 2

The correct option is (C): lead.