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The nuclei of elements X,Y and Z have sa...

The nuclei of elements X,Y and Z have same number of protons, but different nembers of neutrons. According to Mendeleef periodic table, the elements X,Y and Z

A

belongs to same group and same period

B

belong to different groups and different periods

C

belong to same group and different periods

D

are isotopes, which do not have different positions

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Verified by Experts

The correct Answer is:
D
Isotopes have same number of protons (i.e. same atomic number). So they occupy same position in the peridoic table. However, due to different numbers of neutrons their atomic weights are different.
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BANSAL-PERIODIC TABLE-EXERCISE-3
  1. The nuclei of elements X,Y and Z have same number of protons, but diff...

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  2. Use the following system of naming elements in which first alphabets o...

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  3. Mg^(2+), O^(2-),Na^(+),F^(-),N^(3-) (Arrange in decreasing order of io...

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  4. Why Ca^(2+) has a smaller ionic radius than K^(+).

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  5. Arrange in decreasing order of atomic size: Na,Cs, Mg, Si, CI

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  6. Why the first ionisation energy of carbon atom is greater than that of...

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  7. The IE do not follow a regular trend in II & III periods with increasi...

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  8. Explain why a few elements such as Be(+0.6),N(+0.3) & He(+0.6) have po...

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  9. Which bond in each pair is more polar (a) P-CI or P - Br (b) S -CI o...

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  10. From among the elements,choose the following: CI,Br, F,Al, C,Li,Cs& Xe...

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  11. In the ionic ompound KF, the K^(+) and F^(-) ions are found to have pa...

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  12. Which oxide is more basic, MgO or BaO? Whay?

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  13. The basic nature of hydroxides of group 13 (III-A) decreases progressi...

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  14. Based on location in P.T. which of the following would you expect to b...

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  15. Compare the following giving reasons Acidic nature of oxides: CaO, CO,...

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  16. The ionisation potentials of atoms A and B are 400 and 300 kcal mol^(-...

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  17. If internuclear distance between CI atoms in CI(2) is 10Å & between H ...

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  18. The As-CI bond distance in AsCI(3) is 2.20 Å. Estimate the SBCR (singl...

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  19. The Pt-CI distance is 2.32 A in several crystaline compounds What is...

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  20. The IE values of Al((g)) = Al^(+) +e is 577.5 kJ mol^(-) and DeltaH fo...

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  21. For the gaseous reaction K+F rarrK^(o+)+F^(ɵ) Delta H = 19 kcal mo...

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