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Q.
Emission of an alpha particle leads to a
AIPMTAIPMT 1989
Solution:
When an alpha particle is emitted from a
radioactive element, then its atomic number is
decrease by 2 units and mass number is decrease by
4 units.
$\, \, \, \, \, \, \, \, \, \, \, \, _{84}Po^{210}\longrightarrow _{82}Po^{206}+ _{2}He^{4}$