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BF(3) and NF(3) both molecules, are cova...

`BF_(3) and NF_(3)` both molecules, are covalent, but `BF_(3)` is non - polar and `NF_(3)` pole. Its reason is

A

In uncombined state botom is metal and nitrogen is gas

B

`B - F` bond has no dipole moment whereas `N - F` bond has dipole moment

C

The size of boron atom is smaller than nitrogen

D

`BF_(3)` is planar whereas `NF_(3)` is pyramidal

Text Solution

Verified by Experts

The correct Answer is:
D
`BF_(3)` is planar while `NF_(3)` is pyramidal due to the presence of lone pair of electron on nitrogen in `NF_(3)`
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NF_(3) is

A polar covalent bond with positive and negative charge centres at its ends is called a dipole. The polarity of a dipole is measured by its dipole moment. Mathematically it is expressed as dipole moment, mu=q xx d where q and d are the net charge and the distance between the two charges respectively. Dipole moment is a vector quantity. The net dipole moment of a polyatomic molecule is the resultant of the various bond moments present in the molecule. The values of dipole moment are expressed in Debye (D) or in SI units in terms of coulomb- metre (Cm). One of the most important applications of dipole moment is in the determination of geometry and shape of molecules besides prediction of a number of properties of the molecules. The molecules BF_3 and NH_3 both are covalent compounds but BF_3 is non-polar while NF_3 is polar . The reason is that

BF_(3) and NF_(3) both are covalent compounds but NF_(3) is polar whereas BF_(3) is non-polar. This is because :

NH_(3) is more polar than NF_(3) because _________.

Why is BeCl_(2) molecule linear, but BF_(3) is trigonal planar?

A2Z-CHEMICAL BONDING AND MOLECULAR STRUCTURE-Dipole Moment
  1. For the formation of covalent bond, the different in the value of elec...

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  2. Which of the following molecules will show dipole moment?

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  3. Which bond angle theta would result in the maximum dipole moment for t...

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  4. Carbon tetrachloride has no net dipole moment because of

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  5. Pick out of molecule which has zero dipole moment?

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  6. Which has maximum dipole moment?

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  7. The dipole moment of HBr is 1.6 xx 10^(-30) cm and interatomic spaci...

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  8. In a pole molecule , the ionic is 4.8 xx 10^(-10) esu. If the inter di...

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  9. Which of the following will have zero dipole moment?

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  10. BF(3) and NF(3) both molecules, are covalent, but BF(3) is non - polar...

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  11. Which of the following is the correct order of dipole moment?

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  12. Arrange the following compounds in order of increasing dipole moment ....

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  13. Of the following molecules the one which has permaanent dipole moment ...

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  14. Increasing order of dipole moment is

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  15. Which contains both polar and non-polar bonds ? .

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  16. The correct sequece of dipole moment among the chlorides of methane is

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  17. The geometry of H2 S and its dipole moment are :

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  18. Which of the following has been arrange in order of detereasing dipole...

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  19. Which of the following has the least dipole moment?

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  20. Which of the following molecules significant mu !=0?

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