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Why is first ionization enthalpy of ...

Why is first ionization enthalpy of nigtrogen greater than that of oxygen ?

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Nitrogen has stable exactly half- filled p- orbitals `(1s^(2) 2s^(2) 2p_(x)^(1) 2p_(y)^(1) 2p_(y)^(1))` while oxygen `(1s^(2) 2s^(2) 2p_(x)^(2) 2p_(y)^(1) 2p_(z)^(1))` does not and hence `Delta_(i)H_(1)` of nitrogen is greater than that of oxygen.
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PRADEEP-CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES -Additional Question (very short answer question )
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  2. What are super heavy elements?

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  7. Name the groups of elements classified as s- ,p - and d- blocks.

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  8. To Which block (s,p , d or f ) does the element with atomic numbe...

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  9. Which among the following is a transition element?

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  10. Which has a larger radius : (i) Mg or Ca (ii) S or Si

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  11. Compare the size of (a) Na atom with Na^(+) ion (b) Cl atom with C...

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  12. Give four examples of species which are isoelectronic with Ca^(2+...

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  13. Arrange the following ions in order of decreasing ionic radii : ...

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  14. A1 atom loses electrons successively to form A1^(+) ,A1^(2+) and A...

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  15. Which one among the following elements has the lowest first ion...

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  16. Name the element in the table which has the highest and lowest ...

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  17. From amongst Be, B and C, Choose the element with highest and lowe...

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  18. Why is first ionization enthalpy of nigtrogen greater than that ...

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  19. Why are electron gain enthalpies of Be and Mg positive ?

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  20. Which of the following elements has most positive electron gain ...

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