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The first(IE(1)) and second (IE(2))Ioniz...

The first(IE_(1)) and second (IE_(2))Ionization energies (KJ/mol) of a few elements designated by roman numerals are given below.Which of these would be an alkali metal?

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a. `II` , b. `IV` , c. `I` , d.` III`
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Knowledge Check

  • The first (IE_(1)) and second (IE_(2)) ionisation energies (k J mol^(-1)) of a new elements designated by roman numerals are shown below: {:(,,IE_(1),IE_(2),),(I,,2370,5250,),(II,,520,7300,),(III,,900,1800,),(IV,,1700,3400,):} Which of the above elements is likely to be : a. A reactive metal b. A reactive non-metal c. a noble gas d. A metal that forms a stable binary halide of the formula AX_(2) ( X= the halogen).

    A
    I,2372,5251
    B
    II,520,7300
    C
    III,900,1760
    D
    IV,1680,3380
    • CENGAGE CHEMISTRY ENGLISH-APPENDIX - INORGANIC VOLUME 1-Exercise Short
    1. The first(IE(1)) and second (IE(2))Ionization energies (KJ/mol) of a f...

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    2. Give four characteristics of s-block elements.

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    3. Give four defects of Mandeleev's periodic table.

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    4. why the number of elements in the first period is only 2?

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    5. On the basis of their electronic configuration, explain why alkali met...

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    6. Why do the melting points decrease in going from NaF to Nal?

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    7. Why are group 1 elements called alkali metals ?

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    8. Give five characteristics of d-block elements.

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    9. (a) What was the basis of Mendeleev's Classification of elements ? (...

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    10. Why does the solubility of alkaline earth metal carbonates and sulphat...

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    11. why is melting point of LiCI lower than NaCI?

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    12. Arrange the following in increasing order: a. BeCO(3),BaCO(3),CaCO(3...

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    13. Which alkali metal carbonate is thermally unstable and why?

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    14. The element which has highest electron affinity ?

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    15. What is diagonal relationship?

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    16. Give four characteristics of f-block elements.

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    17. Why are electron affinities of noble gases zero? Arrange halogens in i...

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    18. Arrange the species in each group in order of increasing ionisation en...

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    19. State the factors which affect electronaffinity

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    20. Explain the term (a) screening effect

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