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How would you justify the presence of 18...

How would you justify the presence of 18 elements in the 5th period of the Periodic Table?

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Knowledge Check

  • The number of elements in the 4th period of periodic table is

    A
    8
    B
    10
    C
    18
    D
    32
  • The number of elements in the 4th period of periodic table is

    A
    8
    B
    10
    C
    18
    D
    32
  • Number of elements in the second period of the periodic table is -

    A
    eighteen
    B
    eight
    C
    two
    D
    ten
  • NARAYNA-PERIODIC TABLE -All Questions
    1. How would you justify the presence of 18 elements in the 5th period of...

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    2. What would be the IUPAC name and symbol for the element with atomic no...

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    3. The X-X bond length is 1.00A^(0) and C-C bond length is 1.54A^(@). If ...

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    4. The first ionization enthalpy (Delta(t)H) values of the third period e...

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    5. The successive ionization enthalpies of an element M are 5.98, 18.82, ...

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    6. The ionization enthalpy of sodium is 5.14 eV. How many k cal of energy...

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    7. Process (A): F(2(g)) +2e^(-) rarr 2F((g))^(-) Process (B): Cl(2(g)) ...

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    8. Bond energies of H(2), Cl(2) and HCI are respectively 104, 58 and 100 ...

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    9. Covalent radius of .(82)Pb is 1.53Å. Calculate its electronegativity b...

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    10. The ionization enthalpy of sulphur is 1014 kJ mol^(-1). If its electro...

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    11. Electronegativity of F on Pauling scale si 4.0 Calculate its value on...

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    12. Using the periodic table, predict the formula of compound formed betwe...

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    13. What is the valency and oxidation number of nitrogen in nitrogen pento...

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    14. Are the oxidation state and covalency of Al in [AlCl(H(2)O)(5)]^(2+) s...

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    15. Lother Meyer obtained the curve for the known elements by plotting the...

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    16. In Lother Meyer plot, the peaks are occupied by

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    17. The law of triad is applicable to a group of a)Cl, Br, I b)C,N,O c)Na...

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    18. The atomic number of element Unq is:

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    19. The basis for the classification of elements in the modern periodic t...

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    20. Considering the chemical properties, atomic weight of Be was corrected...

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