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The first ionisation energy of beryllium...

The first ionisation energy of beryllium is more than that of boron because

A

Boron has higher nuclear charge

B

Atomic size of boron is more than that of beryllium

C

Boron has only one electron in p-sub-shell

D

Atomic size of boron is less than that of beryllium

Text Solution

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The correct Answer is:
C
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ERRORLESS -CLASSIFICATION OF ELEMENTS AND PERIODIC PROPERTIES -Ordinary Thinking Objective Questions Ionisation Energy
  1. Which of the following elements will have the lowest first ionisation ...

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

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

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

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

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

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

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

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  9. Which of the following has highest ionisation energy ?

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

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

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

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

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

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  15. Choose the correct statement

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  16. The ionisation energy of an element is

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

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  18. Assertion: E^(@) for Mn^(3+)//Mn^(2+) is more positive than Cr^(3+)//C...

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  19. Assertion : Ionisation enthalpy is always negative. Reason : Energy...

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  20. Assertion: Ionisation potential across the period is NaltAlltMgltSi. ...

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