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Which of the element is expected to have...

Which of the element is expected to have lowest first ionisation enthalpy

A

Sr

B

As

C

Xe

D

S

Text Solution

Verified by Experts

The correct Answer is:
A
Sr has the lowest first ionisation energy among the given options.
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ERRORLESS-CLASSFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES -NCERT BASED QUESTIONS (Ionisation Energy)
  1. Among the following, the third ionisation energy is highest for

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  2. Generally, the first ionisation energy increases along a period. But t...

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  3. Which of the element is expected to have lowest first ionisation entha...

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  4. The first ionisation potential of Na is 5.1eV. The value of electrons ...

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  5. Amongest Be, B, Mg and Al, the second ionization potential is maximum ...

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  6. In which of the following options the order of arrangement does ...

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  7. One among the following is the incrorrect order of increasing ionisati...

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  8. A sudden large jump between the values of second and third ionisation ...

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  9. Which element having the following electronic configuration has minimu...

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  10. The correct order of the second ionisation potential of carbon, nitrog...

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  11. The correct match of contents in Column I with those in Column II is

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  12. One electron species having ionization enegry of 54.4 eV is

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  13. Amongst the following elements whose electronic configuration are ...

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  14. The incorrect statement among the following is

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  15. The first ionization energy of oxygen is less than that of nitrogen. W...

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  16. Which of the following explanation is best for not placing hydrogen in...

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  17. Which of the following order is wrong-

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  18. Among the following transition elements, pick out the element/elements...

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  19. The decreasing order of the first ionization energy (in kJ mol^(-1)) o...

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  20. Order of first ionisation potentials of elements Li,Be,B, Na is

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