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Which of the following metals requires r...

Which of the following metals requires radiation of highest frequency to cause emission of electrons?

A

Na

B

Mg

C

K

D

Ca

Text Solution

Verified by Experts

The correct Answer is:
B
Because it has highest ioisation enthalpy.
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MODERN PUBLICATION-CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES-MULTIPLE CHOICE QUESTIONS (LEVEL -II)
  1. The first ionisation enthalpy (in kJ/mol) of Be, B and C atoms are res...

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  2. Which of the following configurations is associated with biggest jump ...

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  3. Which of the following metals requires radiation of highest frequency ...

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  4. The element with electronic configuration 1s^(2)2s^(2)2p^(6)3s^(2)3d...

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  5. Which of the following values in electron volt per atom represent the ...

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  6. Transition metals lie in the periodic table between groups

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  7. Which pairs of atomic numbers represent elements which belong to s blo...

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  8. Which of the following sets of elements have the strongest tendency to...

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  9. Which of the following represents elements in order of increasing size...

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  10. The number of elements in the fifth period of periodic table is

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  11. The element with atomic number 35 lies in group

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  12. The electronic configuration of four elements are given below. Which o...

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  13. The element with atomic number 55 belongs to which block of the period...

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  14. The electronic configuration of an element is 1s^(2)2s^(2)2p^(6)3s^(2)...

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  15. A sudden jump between second and third ionisation enthalpies of an ato...

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  16. The electronic configuration of the element which is just above the el...

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  17. The correct values of ionisation energies of Si, P, Cl and S are respe...

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  18. The element which has greastest difference between first and second io...

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  19. In a group of the periodic table, the elements possess:

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  20. The process requiring the absorption of energy is:

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