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The first ionization enthalpy of magnesi...

The first ionization enthalpy of magnesium is higher than that of sodium. On the other hand, the second ionization enthalpy of sodium is very much higher than that of magnesium. Explain.

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MODERN PUBLICATION-CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES -REVISION EXERCISE (VERY SHORT ANSWER QUESTIONS (CARRYING 2 OR 3 MARKS))
  1. Why are lanthanides and actinides place at the bottom of the periodic ...

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  2. Why are cations smaller than neutral atom?

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  3. Which of the following properties show gradual decrease with increase ...

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  4. Nitrogen has positive electron gain enthalpy whereas oxygen has negati...

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  5. Oxides formed by p-block elements may be (i) basic (ii) acidic (...

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  6. Explain the following a) Electronegatively of elements increase on m...

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  7. What do you understand by the terms (i) Ionization enthalpy (ii) E...

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  8. The ionization potential (I(1)) of nitrogen (Z=7) is more than oxygen ...

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  9. Explain the term electron gain enthalpy. Discuss the factors which inf...

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  10. Why is ionization enthalpy of Be more than that of B? Explain.

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  11. How does the metallic and non-metalic character vary on moving from le...

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  12. Among alkali metals which element do you expect to be least electroneg...

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  13. How would you explain the fact that the first ionisation enthalpy of s...

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  14. Arrange the elements N, P, O and S in the order of i) increasing fir...

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  15. Why does the first ionisation energy increase as we go from left to ri...

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  16. Why does ionization energy decreases down the group?

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  17. The first ionization enthalpy of magnesium is higher than that of sodi...

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  18. Which of the elements Na, Mg, Si and P have the greatest difference be...

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  19. Explain the terms ionization enthalpy and electron gain enthalpy.

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  20. Why are lanthanides and actinides place at the bottom of the periodic ...

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