no any physical process or chemical change
affect radioactive decay or shift the half of any atom but
the only process that can change this is when
we entire create a new atom by accidentally or deliberately bombarding the nucleus
by a neutron thereby changing it another
atom entire, when this happens then the half life of the entire process can be
crippled.
Because we have now created a new nucleus
which can be radioactive or not, and can have same or different half life.
The second factor that can alter a nuclear
process is in the case of electron capture; if the chemical form changes enough
so that the electrons are very much closer to the nucleus the halflife can be
affected by few percent.
Not that increase or decrease of
temperature do not affect radioactive decay,
extreme temperatures has no effect on radioactivity likewise extreme
pressures has no effect on radioactive decay, presence of chemical also does
affect radioactive decays.
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