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The strength of bonds by 2s -2s, 2p-2p a...

The strength of bonds by 2s -2s, 2p-2p and 2p-2s overlap has the order

A

`s-s gt p-p gt s-p `

B

`s-s gt p-s gt p-p`

C

`p-p gt p-s gt s-s `

D

`p-p gt s-s gt p-s `

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The correct Answer is:
b
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A covalent bond will be formed by the overlapping of atomic orbitals having single electron of opposite spin, according to the overlapping of atomic orbitals the covalent bond may be of two types : (i) Sigma bond (sigma) " " (ii) Pi bond (pi) Sigma bond is stronger bond than the Pi-bond. If atomic orbitals overlap about the nuclear axis then sigma bond is formed but when atomic orbitals overlap sideway then Pi-bond is formed. The strength of bonds formed by 2s-2s,2p-2p and 2p-2s overlap has the order :

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An element A has the electronic configuration 1s^(2)2s^(2)2p^(6)3s^(2) and another element B has the electronic configuration 1s^(2)2s^(2)2p^(6)3s^(2)3p^(5) . What type of bond is formed between A and B? Give its Lewis structure.

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MARVEL PUBLICATION-NATURE OF CHEMICAL BOND -TEST YOUR GRASP
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  2. Which of the following does not follow the octet rule ? .

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  3. The stability of ionic crystal depends principally on

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  4. Which of the following statements about LiC and NaCl is wrong?

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  5. Which of the following bonds is the strongest ? .

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  6. Which of the following is the correct electron-dot structure of N2O mo...

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  7. Which of the following molecule has highest dipole moment?

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  8. Which of the following molecule has highest dipole moment?

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  9. The correct order of decreasing polarity is

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  10. In an ionic compound A^(+) X^(-) the degree of covalent bonding is gre...

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  11. According to Fazan rule, the covalent bond is favoured by :

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  12. Out of CHCl(3), CH(4) and SF(4) the molecules do not having regular ge...

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  13. Which out of the following structures is expected to have three bond p...

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  14. A molecule XY(2) contains two sigma bonds two pi bond and one lone pai...

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  15. N atom in NH(4)^(+) involves the hybridizations

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  16. A hybrid orbital formed from s and p-orbital can contribute to

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  17. The state of hybridization of the central atom is not the same as in t...

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  18. The d-orbitals involved in dsp^2 hybridisation is

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  19. Which of the following molecules in planar ?

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  20. The number of sp^2-s sigma bonds in benzene are

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  21. The bond angle in H2O is nearly 105^@ whereas bond angle in H2 S is ne...

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