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The numbers of protons, electrons and ne...

The numbers of protons, electrons and neutrons in a molecule of heavy water are respectively

A

10,10,10

B

8,10,11

C

10,11,10

D

11,10,10

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A
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ALLEN-QUANTUM NUMBER & PERIODIC TABLE-J-MAIN EXERCISE
  1. In which of the following arrangements, the sequence is not strictly a...

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  2. For how many orbitals are the quantum numbers n = 3, l = 2, m = +2 pos...

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  3. The numbers of protons, electrons and neutrons in a molecule of heavy ...

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  4. Given (a) n=5,m(i)=+1 (b) n=2,l=1,m(i)=-1,m(s)=-1//2 The maximum...

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  5. Which of the following represent the correct order of increasing first...

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  6. The first ionisation potential of Na is 5.1 eV. The value of electron ...

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  7. The negative value of electron gain enthalpy is less for fluorine than...

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  8. Given Based on data provided, the value of electron gain enthalpy...

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  9. The order of increasing sizes of atomic radii among the elements O, S,...

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  10. The correct order of second ionisation potential of C, N, O and F is:

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  11. Correct set of four quantum numbers for the valence (outermost) electr...

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  12. Which of the following series correctly represents relations between t...

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  13. The ionic radii of N^(3-), O^(2-) and F^(-) are respectively given by:

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  14. In the long form of the periodic table the valence shell electronic co...

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  15. Which element has the highest first ionization energy?

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  16. The non-metal that does not exhibit posittve oxidation state is:

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  17. The electronic configuration with the highest ionization enthalpy 'A' ...

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  18. Consider the following ionization enthalpies of two elements 'A' and '...

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  19. In the following reaction, ZnO is respectively acting as a/an (i) Zn...

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  20. The group having isoelectronic species is :-

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