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If the half-life period of a radioactive metal 1 month then

[A].	the metal will have completely disintegrated in two months	[B].	7/8th of the metal will have disintegrated at the end of 3 months
[C].	1/8th of the metal will remain intact at the end of 4 months	[D].	the metal will have completely disintegrated in 4 months

Answer: Option B