Chemistry- Unit 3 Half Life and Nuclear Decay and Atomic stuff

Alpha Particle

HE with 4 on top and 2 on bottom

Beta Particle

E with 0 on top and -1 on bottom

Gamma Particle

Y with 0 on top and bottom

Half Life Formula

A=A(1/2)^t/h

Atomic radius

gets bigger going down b/c e- are added and smaller going right b/c strong force pulls tightly together

Ionization

Across is more energy b/c closer to octet—>more energy needed to take from valence, down is less energy b/c more shielding means nucleus holds onto e- —> less energy needed

Electronegativity

Increases as you go right b/c closer to octet —> more likely to accept e-, decreases as go down b/c shielding increases ——> hard to attract e-

Ionic radius

measure of cation and anion, cation dec as go L—>R b/c more force, down inc b/c less force, anion dec L—> b/c less force, inc b/c shielding inc