Understanding the definition of isotopes and common examples of isotopes of elements is crucial.
With reference to 'Isotopes', which of the following statements is/are correct? 1. Atoms with identical atomic numbers but different atomic mass numbers are known as isotopes. 2. Protium, Deuterium and Tritium are isotopes of carbon. Select the correct answer from the code given below : Code :
Asked in uppsc 2025 2025 · Topic: Nuclear Physics (Basic properties of nuclei: size, shape, charge, mass, spin, magnetic dipole and electric quadrupole moments.)
More Physics questions
- Which of the following pairs represents isobars ?
- Where are electrons located in an atom?
- Select the pairs of isobars from the following nuclei : $^{12}_{6}\text{Na}^{23}$, $^{12} _{6}\text{Mg}^{24}$, $^{11}_{5}\text{Na}^{24}$ - $^{12}_{6}\text{Mg}^{24}$, $^{11} _{5}\text{Na}^{24}$ - $^{12}_{6}\text{Na} ^{23}$, $^{12}_{6}\text{Mg}^{24}$ - $^{12} _{6}\text{Na}^{23}$, $^{11}_{5}\text{Na}^{24}$
- Select the pairs of isobars from the following nuclei : $$_{12}Na^{23}, _{12}Mg^{24}, _{11} Na^{24}$$
- Select the pairs of isobars from the following nuclei : ${ }_{12}^{25} \mathrm{Na},{ }_{12} ^{24} \mathrm{Mg},{ }_{11}^{24} \mathrm{Na} $ - ${ }_{12} \mathrm{Mg}^{24},{ }_{11} \mathrm{Na}^{24}$ - ${ }_{12} \mathrm{Na}^{23},{ } _{12} \mathrm{Mg}^{24}$ - ${ }_{12} \mathrm{Na}^{23},{ }_{11} \mathrm{Na}^{24}$
- Both have the same atomic number (12) but different mass numbers (25 and 24). These would be isotopes of an element with Z=12. They are not isobars.- Option C: ${ }_{12}^{25} \mathrm{Na}$ and ${ }_{11}^{24} \mathrm{Na} $. - ${ }_{12}^{25} \mathrm{Na}$: Mass number (A) = 25, Atomic number (Z) = 12. - ${ }_{11} ^{24} \mathrm{Na}$: Mass number (A) = 24, Atomic number (Z) = 11. They have different mass numbers and different atomic numbers. They are neither isobars nor isotopes.Therefore, option A correctly identifies a pair of isobars. 35. The ratio of momenta of an electron and an $\alpha$-particle which are accelerated from the rest by a potential difference of 100 volt is (m$_e$ – mass of electron, m$_\alpha$ – mass of $\alpha$-particle)
- Atomic number of an element is equal to number of ____ in the nucleus.
- Isodiaphers have