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During the formation of a chemical bond,...

During the formation of a chemical bond, the potential energy of the interacting atoms is lowered by at least _____________ `kJ mol^(-1)`.

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During bond formation, potential energy of the system

The enthalpy of formation of ammonia when calculated from the following bond energy data is (B.E. of N-H, H-H, N-=N is "398 kJ mol"^(-1), "435 kJ mol"^(-1),"945.36 kJ mol"^(-1) respectively)

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The standard enthalpy of formation of NH_(3) is -46.0 kJ mol^(-1) . If the enthalpy of formation of H_(2) from its atoms is -436 kJ mol^(-1) and that of N_(2) is -7112kJ mol^(-1) , the average bond enthalpy of N-H bond in NH_(3) is :-

CENGAGE CHEMISTRY-CHEMICAL BONDING AND MOLECULAR STRUCTURE-Exercises Fill In The Blanks
  1. The Type of hybrid orbitals used by the chlorine atom in CIO(2)^(Theta...

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  2. The cyanide ion CN and N(2) are isoelectronic, but in contrast to CN^(...

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  3. The shape of CH(3)^(+) is ………….

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  4. The valence atomic orbital on C in silver acetynide is ……………hybridised...

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  5. Out of CH(3)^(o+),H(3)O^(o+),NH(3),CH(3)^(Theta) the species which is ...

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  6. The experimentally determined N-F bond length in NF(3) is than the sum...

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  7. When N(2) goes to N(2)^(+), the N-N bond distance …………, and when O(2) ...

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  8. The central bond in 1,3 butadience isthan that of n-butane .

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  9. Out of (A) toluene (B) m-dichloro benzene (C ) o-dichloro benzene and ...

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  10. In BaC(2)sigma andpi bonds are present between two C-atoms .

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  11. During the formation of a chemical bond, the potential energy of the i...

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  12. Comparatively low melting point and insolubility in water of AICI(3) i...

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  13. The dipole moment of CH(3)OH isthan that of CH(3)SH .

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  14. Dipole moment of NH(3) isthan NF(3) .

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  15. In a compound A,B if the element B attracts electrons more than elemen...

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  16. The strenght of covalent bond will depend on the extent to which atomi...

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  17. Salicyaldehyde involveshydrogen bonding .

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  18. The bond multiplicity leads toin bond length .

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  19. The angle between two covalent bonds is maximum in ……..(CH(4),H(2)O,CO...

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  20. Due to hybridisationhybrid orbitals are formed .

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