Question on: JAMB Physics - 2001
Which of the following metals will provide the greatest shield against ionizing radiation
A
Iron
B
Manganese
C
Alminium
D
Lead
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Correct Option: D
The ability of a material to shield against ionizing radiation is related to its density and atomic number. Materials with higher density and higher atomic number are more effective at absorbing and attenuating radiation.
* **Lead (Pb)** has a high atomic number and high density.
* **Iron (Fe)** has a lower atomic number and density than lead.
* **Manganese (Mn)** has a lower atomic number and density than iron.
* **Aluminum (Al)** has a significantly lower atomic number and density than iron.
Therefore, lead provides the greatest shield against ionizing radiation.
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