Nuclear Nomenclature

Nuclear Nomen clature X zxA Mass number (no of n + no.of p) YAtomic no. (no. of protons) No. of neutron = A-z Classification of nuclei 1. Isotopes Same Atomic no Z but diff. : mass no. A eg. ,H', ,H2,,H3 If Z is same then element will be same. 2. Isobars Same A but diff. Z eg. 6c14 and 7 N14 Z- diff. thus element will be diff. 3. Isotone Same no. of neutron. eg. 6C 13 and 7N14 N= 14-7= 7 N 13-6=7

4. Isomers Nuclei having same A and same Z but different from one another in their nuclear energy states. eg. ZXA ZXA + y 2%A 7 (Motor) 3Lix7 3Li + r Also these nuclear energy states. have diff. life times. 5. Mirror nuclei same A but differentz Also proton and neutron number interctorgest eg. 27 7 4 Be and 3 34 Z=4 N=4 N= 3 Z=3 (All) Every Mirror nuclei are isobar, but All isobar need not be mirror nuclei. " Mirror nuclei special case of iso bar% For mirror nuclei which (A= odd) A= 22t1. eg. 4 Be and 34 AI 7= 2x4-1 A=7 2%3+1 Also- A= Zizz (2,>Z2) A= 7= 42-32 Z, Z2 I 4-3-+1 3-4=-1 (z-22) 2 = I