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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

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The correct Answer is:
A
Sr has the lowest first ionisation energy among the given options.
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ERRORLESS -CLASSIFICATION OF ELEMENTS AND PERIODIC PROPERTIES -Ordinary Thinking Objective Questions Ionisation Energy
  1. The formation of the oxide ion O((g))^(2-) requires first an exothermi...

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  2. With reference to ionisation potential which one of the following sets...

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

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  4. Which of the following elements will have the lowest first ionisation ...

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  5. Which of the following species has lowest ionisation potential?

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  6. The correct order in which the first ionisation potential increases is

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

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  8. Ionisation energy in group I-A varies in the decreasing order as

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  9. The second ionisation potential of an element M is the energy required...

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  10. Arrange S, P and As in order of increasing ionisation energy.

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  11. Which ionisation potential (IP) in the following equations involves th...

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  12. Which of the following has highest ionisation energy ?

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  13. Which one of the following elements has the highest ionisation energy?

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  14. Which of the following electrons should generally have the highest val...

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  15. The first ionisation energy of beryllium is more than that of boron be...

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  16. A rarr A^(+)+e,E(1) and A^(+) rarr A^(2+)+e,E(2). The energy requried ...

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

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  18. Choose the correct statement

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  19. The ionisation energy of an element is

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  20. Assertion :First ionization energy is lower than oxygen. Reason :Ac...

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