Question

Match the following
Codes :
P Q R S
(A)$3412$
(B)$2134$
(C)$3142$
(D)$4123$
(Species) (Relation)

Answer 1

(A) $C{N}^{-},N_2$ are isoesters.
(B) $F^{19},K^{39}$ are isodiaphers.
(C) $N^{15},O^{15}$ are isobars.
(D) $C^{14},N^{15}$ are isoesters.
Isodiaphers are those atoms for which (n*p) is equal, Isoesters are those species which contains equal number of atoms as well as equal number of electrons. Isobars are nuclides that have same mass number (sum of neutrons and protons).