Radioactive elements can be categorised into (a) Neutron rich nuclide (b) Neutron poor nuclide In order to achieve stable n/p ratio these nuclide either emits beta^(-),beta^(+) (positron) or alpha-particle depending upon the n/p ratio of unstable nuclei and stable nuclei ._(53)P^(135) rarr Q+a Q rarr R+b [Note : only stable isotope of element P and Q are ._(53)P^(135) and ._(54)Q^(137) respectively] Element P,Q,R do not show any resemblence to currently known element ._(53)P^(135) rarr Q+a,t_(1//2)=1000 hrs Q rarr R+b,t_(1//2)=10 min Number of nuclei of Q and R respectively after 1000 hr if we start with 2 mol P [N_(A)=6xx10^(23)]

Radioactive elements can be categorised into (a) Neutron rich nuclide

1.	Radioactive elements can be categorised into (a) Neutron rich nuclide (b) Neutron poor nuclide In order to achieve stable n/p ratio these nuclide either emits beta^(-),beta^(+) (positron) or alpha-particle depending upon the n/p ratio of unstable nuclei and stable nuclei ._(53)P^(135) rarr Q+a Q rarr R+b [Note : only stable isotope of element P and Q are ._(53)P^(135) and ._(54)Q^(137) respectively] Element P,Q,R do not show any resemblence to currently known element ._(53)P^(135) rarr Q+a,t_(1//2)=1000 hrs Q rarr R+b,t_(1//2)=10 min Number of nuclei of Q and R respectively after 1000 hr if we start with 2 mol P [N_(A)=6xx10^(23)]
Answer» `6XX10^(23),6xx10^(23)` `6xx10^(22),6xx10^(23)` `2XX10^(20),6xx10^(23)` `10^(20),6xx10^(23)` Answer :D