Remaining Quantity:
Decay Constant:
Mean Lifetime:
Half-life refers to the amount of time it would take for a quantity of a substance to decay to half its current quantity. More specifically, half-life is the amount of time required to pass for half of the atoms of a radioactive substance to decay away.
A half-life of 2 hours means it will take 2 hours for a substance to reduce its quantity to half.
No, half-life can not be negative, it will always be a positive amount of time that is required to pass for half of the quantity of the radioactive substance to decay away.
It is believed that hydrogen-7 has the lowest and shortest half life at 23 yoctoseconds (2.3 x 10-23.
Tellurium-128 has an amazingly long half-life period 2.2 x 1024 years. This number is roughly 160 trillion times longer than the universe!
Create Date: October 16, 2024
Last Modified Date: October 16, 2024
