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Among the elements B, AI,C and Si, (i)...

Among the elements `B, AI,C` and `Si`,
(i) Which elements has the highest first ionisation enthaloy?
(ii) When element has the most metallic character? Justify your answer in each case.

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The correct Answer is:
(i) `C` (ii) `AI`
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RESONANCE-PERIODIC TABLE & PERIODICITY-Exercise
  1. Why second ionization enthalpy is always higher than the first ionisat...

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  2. The first ionization enthalpy of carbon is greater than that of boron,...

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  3. Among the elements B, AI,C and Si, (i) Which elements has the highes...

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  4. Be and Ne have positive values of electron gain enthalpy against the g...

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

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  6. Among alkali metals, which element do you expect to be least electrone...

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  7. Explain the following according to Modern periodic table: ltbr. (a) El...

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  8. The period number in the long form of the periodic table is equal to:

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  9. Which one of the following statements related to the modern periodic t...

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  10. The elements in which electrons are progressively filled in 4f-orbital...

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  11. Which of the following statements is not correct regarding hydrogen:

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  12. Atomic number of Ag is 4.7. in the same group, the atomic numbers of e...

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  13. In modern periodic table, the element with atomic number Z = 118 will ...

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  14. The order of screening effect of electrons of s, p, d and f orbitals o...

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  15. Which of the following is generally true regarding effective nuclear c...

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  16. Among following species which of them have maximum Z(eff)

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  17. From the given set of species, point out the species from each set hav...

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  18. The atomic number of an element which can not show the oxidation stat...

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  19. The most common oxidation state of an element is -2. the number of ele...

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  20. Most stable oxidation state of gold is:

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