Answer
Verified
400.8k+ views
Hint: Nuclear isomers are atoms with same mass number and atomic numbers, but with different states of excitation in the atomic nucleus. The higher or more excited state is called a metastable state, while the stable, unexcited state is called the ground state. Metastable isomers can be produced through nuclear fusion or other nuclear reactions.
Complete step by step answer:
What are nuclear isomers?
A nuclear isomer is an excited metastable energy state with a half-life, significantly longer than most of other excited energy levels. A metastable of a given isomer is designated with an ‘m’ next to the mass number of the isotope, or in the case of an isotope with more than one isomer, m1, m2 and so forth.
For example, silver-116 has two metastable states in addition to the ground state, so the three states would be written as ${}^{116}Ag$, ${}^{116m1}Ag$ , ${}^{116m2}Ag$.
Nuclear Isomerism: Nuclear isomerism may be due to the fact that the two lowest nuclear states have zero angular momentum and opposite parity. The lifetime of the first excited state is estimated under these conditions for the emission of two quanta and for the ejection of two electrons from the K or L shell.
Nuclear isomerism is exhibited by all diatomic molecules having an odd Z value. Nuclei with odd Z values possess resultant nuclear spin and hence exhibit nuclear isomerism.
Therefore, option D is the answer!
Note: The nuclear spin is integer (mostly 0) for all even-A nuclei and non-integer (half integer) for all Odd-A nuclei. Most of the metastable states decay quickly, some last for minutes, hours, years or much longer. Nuclear isomers are used as gamma sources for medical procedures, nuclear batteries, for research into gamma ray stimulated emission, and for gamma ray lasers.
Complete step by step answer:
What are nuclear isomers?
A nuclear isomer is an excited metastable energy state with a half-life, significantly longer than most of other excited energy levels. A metastable of a given isomer is designated with an ‘m’ next to the mass number of the isotope, or in the case of an isotope with more than one isomer, m1, m2 and so forth.
For example, silver-116 has two metastable states in addition to the ground state, so the three states would be written as ${}^{116}Ag$, ${}^{116m1}Ag$ , ${}^{116m2}Ag$.
Nuclear Isomerism: Nuclear isomerism may be due to the fact that the two lowest nuclear states have zero angular momentum and opposite parity. The lifetime of the first excited state is estimated under these conditions for the emission of two quanta and for the ejection of two electrons from the K or L shell.
Nuclear isomerism is exhibited by all diatomic molecules having an odd Z value. Nuclei with odd Z values possess resultant nuclear spin and hence exhibit nuclear isomerism.
Therefore, option D is the answer!
Note: The nuclear spin is integer (mostly 0) for all even-A nuclei and non-integer (half integer) for all Odd-A nuclei. Most of the metastable states decay quickly, some last for minutes, hours, years or much longer. Nuclear isomers are used as gamma sources for medical procedures, nuclear batteries, for research into gamma ray stimulated emission, and for gamma ray lasers.
Recently Updated Pages
Basicity of sulphurous acid and sulphuric acid are
Three beakers labelled as A B and C each containing 25 mL of water were taken A small amount of NaOH anhydrous CuSO4 and NaCl were added to the beakers A B and C respectively It was observed that there was an increase in the temperature of the solutions contained in beakers A and B whereas in case of beaker C the temperature of the solution falls Which one of the following statements isarecorrect i In beakers A and B exothermic process has occurred ii In beakers A and B endothermic process has occurred iii In beaker C exothermic process has occurred iv In beaker C endothermic process has occurred
What is the stopping potential when the metal with class 12 physics JEE_Main
The momentum of a photon is 2 times 10 16gm cmsec Its class 12 physics JEE_Main
How do you arrange NH4 + BF3 H2O C2H2 in increasing class 11 chemistry CBSE
Is H mCT and q mCT the same thing If so which is more class 11 chemistry CBSE
Trending doubts
Difference Between Plant Cell and Animal Cell
Difference between Prokaryotic cell and Eukaryotic class 11 biology CBSE
What is BLO What is the full form of BLO class 8 social science CBSE
Change the following sentences into negative and interrogative class 10 english CBSE
Fill the blanks with the suitable prepositions 1 The class 9 english CBSE
The cell wall of prokaryotes are made up of a Cellulose class 9 biology CBSE
What organs are located on the left side of your body class 11 biology CBSE
Select the word that is correctly spelled a Twelveth class 10 english CBSE
a Tabulate the differences in the characteristics of class 12 chemistry CBSE