radiation Flashcards
alpha particle?
emitted particle composed of two protons and two neutrons
4
2 HE
electromagnetic radiation or particles released during radioactive scary from an unstable nucleus
nuclear radiation
beta particle?
emitted electron
0
-1 B
gamma ray?
electromagnetic waves that are usually emitted after alpha or beta emission
0
0 Y
the largest particle is ____, smaller is _____, smallest is _____
alpha, beta, gamma
____ has the lowest penetrability and slowest velocity and highest ionization ability
alpha
____ has greater penetrability and greater velocity and lower ionization ability
beta
____ has greatest penetrability and greatest velocity and lowest ionization ability
gamma
emission of radiation from an unstable nucleus
radioactive decay
half life formula
amount remaining = initial amount (1/2)^x
fusion is
two small nuclei combine to form one larger nucleus
fission is
nucleus of large unstable atom splits into two smaller nuclei