Half life flashcards

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what is half life? half life is the amount of time it takes for half of the atoms in a sample to decay
The half life of an isotope is always ________ the same
why does some alpha emitters have a longer half-life than others? because their barriers to decay are higher and wider
The half-life of radium is about 1600 years. If a rock initially contains 1 g of radium, the amount left after 6400 years will be? 31mg

what is half life?

The half life of an isotope is always ________

why does some alpha emitters have a longer half-life than others?

The half-life of radium is about 1600 years. If a rock initially contains 1 g of radium, the amount left after 6400 years will be?

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