Question

Match the series (in List I) with starting element (in List II) and end element (in List III).

List I	List II	List III
4n	${}_{94}^{241}Pu$	${}_{87}^{207}Pb$
(4n+1)	${}_{82}^{232}Th$	${}_{83}^{209}Bi$
(4n+2)	${}_{92}^{235}U$	${}_{83}^{209}Pb$
(4n+3)	${}_{92}^{238}U$	${}_{82}^{206}Pb$

Answer 1

List I	Name of the series	List II	List III
4n	Thorium series	${}_{90}^{232}Th$	${}_{82}^{208}Pb$
4n+1	Neptunium series	${}_{94}^{241}Pu$	${}_{83}^{209}Bi$
4n+2	Uranium series	${}_{92}^{238}U$	${}_{82}^{206}Pb$
4n+3	Actinium series	${}_{92}^{235}U$	${}_{82}^{207}Pb$