10.2.1 Define radioactive decay as a random, spontaneous process and that the rate of decay decreases exponentially with time 10.2.2 Identify the three types of nuclear emissions as alpha (a) particle, beta (8) particle and gamma (v) radiation by recalling (a) their nature (b) their relative ionizing effects (c) their relative penetrating abilities [(6+) are not incuded, - particles will be taken to refer to (67)] 10.2.3 Describe the deflection of a, , and y emissions in electric and magnetic fields