Am-242 undergoes beta-decay at a half-life of 16 hours. If a chemist starts with a sample of of Am-242 and allows it to undergo beta-decay, how much of the original sample remains after 4 days?

Am-242 undergoes beta-decay at a half-life of 16 hours. If a chemist starts with a sample of of Am-242 and allows it to undergo beta-decay, how much of the original sample remains after 4 days?

What kind of radiation has no charge or mass?

What kind of radiation has no charge or mass?

The isotope of potassium is used to date geological materials. One of the decay reactions this isotope undergoes is:

In order for the nuclear reaction to be balanced can be:

The isotope of potassium is used to date geological materials. One of the decay reactions this isotope undergoes is:

In order for the nuclear reaction to be balanced can be:

As atomic radius decreases, the force of attraction between the nucleus of the atom and its electrons __________.

As atomic radius decreases, the force of attraction between the nucleus of the atom and its electrons __________.

An electron falling to a lower energy level gives off a blue glow (λ=475nm). How much energy is emitted?

An electron falling to a lower energy level gives off a blue glow (λ=475nm). How much energy is emitted?