radiation types

High ionisation power

Alpha

Moderate ionisation power

Beta

Low ionisation power

Gamma

Deflected by magnetic field

Alpha and Beta

NOT deflected by magnetic field

Gamma

Low penetrating power - stopped by paper

Alpha

Moderate penetrating power - stopped by mm of metal

Beta

High penetrating power - stopped by metres of concrete

Gamma

Helium nucleus made of 2 protons and 2 neutrons

Alpha

High speed electron

Beta

High frequency electromagnetic wave

Gamma

Alpha_

particle

Beta_

particle

Gamma_

radiation

Mass = 4, Charge = +2

Alpha particle

Mass = 0, Charge = -1

Beta particle

Mass = 0, Charge = 0

Gamma radiation

Mass no. decreases by 4, Charge no. decreases by 2

Alpha decay

Mass no. unchanged, Charge no. increases by 1

Beta decay

_ _released, mass no. and charge no. unchanged

gamma ray

Conservation laws

Mass and charge

On top

Mass no.

On bottom

atomic no.

Mass no.

no. protons and neutrons

Atomic no.

no. protons