During radioactive decay:

Which of the following is correct regarding radioactive process ? (i) Despite the strength of the forces that hold them togther, many nucleides are unstable and spontaneously alter temselves through radioactive decay sometime through radioactive decay somtimes through a series of such decays, untiall thry reach stable comfigurations (ii) When a nucleus undergoes alpha or beta decay, its atomic number Z chnges and it becomes the nucleus of a different element The energy liberated during radioactive decay comes form within individual nuclei without external exciatation, unlike the case of atomic radiation (iv) Radioactive decay is a statistical process that obeys the laws of chance. no cause effect relationship is involved in the decay of a particular nucleus, only a certain probaility per unit time

The number of alpha and beta - emitted during the radioactive decay chain starting from ._(226)^(88) Ra and ending at ._(206)^(82) Pb is

The number of alpha and beta - emitted during the radioactive decay chain starting from ._(226)^(88) Ra and ending at ._(206)^(82) Pb is

Assuming that only particles emitted from atoms during natural radioactive decay are alpha and beta particles, which of the following atoms could not possibly result from the natural decay of ._(92)U^(235) atoms ?

True or False Statements : 5 alpha and 4 beta^(-) are emitted during the radioactive decay chain starting from ._(88)^(226) Ra and ending at ._(82)^(206) Pb .