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The first ionzation enegry of oxygen is ...

The first ionzation enegry of oxygen is less than that of nitrogen. Which of the following is the correct reason for this observation?

A

Lesser effective nuclear charge of oxygen than nitrogen

B

Lesser atomic size of oxygen than nitrogen

C

Greater inter-electron repulsion between two electrons in the same p orbital counter balances the increase in effective nuclear charge on moving from nitrogen to oxygen

D

Greater effective nuclear charge of oxygen than nitrogen

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

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  7. The screening effect of inner electrons of an atom can cause

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  9. Highest energy will be absorbed to eject out the electron in the confi...

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  10. In which of the following process highest energy is absorbed?

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  11. The formation of the oxide ion O((g))^(2-) requires first an exothermi...

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

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

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

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

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

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

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

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

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