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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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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. Calculate the percent ionic character of HCl. Given that the observed ...

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

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

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

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

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

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  18. The law of triad is applicable to a group of

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  19. The atomic number of element Unq is:

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

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