(a(i))[1]
State how many protons are present in a nucleus of polonium-210.
(a(ii))[1]
State how many neutrons are present in a nucleus of polonium-210.
(a(iii))[1]
State how many electrons are in a neutral atom of polonium-210.
(b)[1]
Name two other kinds of radiation given out when radioactive elements decay.
(c)[3]
Calculate how long the sample takes to decay so that just 0.1 g of polonium-210 is left.