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(A) : SiF4 has octet configuration, but ...

(A) : `SiF_4` has octet configuration, but acts as an electron pair acceptor (R): Central atom of Si has vacant d-orbitals is its valence shell

A

Both (A) and (R) are true and (R) is the correct explanation of (A)

B

Both (A) and (R) are true and (R) is not the correct explanation of (A)

C

(A) is true but (R) is false

D

(A) is false but (R) is true

Text Solution

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The correct Answer is:
A
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Explore conceptually related problems

(A) : SiF_(4) has octel configuration but acts as an electron pair acceptor (R) : Central atom or Si has vacant d-orbitals is its valence shell

(A): Nitrogen is unable to show a valency more than three. (R): Nitrogen does not have vacant d-orbitals in its valence shell.

Passage-IV : Sulphur and rest of the elements of group 16 are less electronegative than oxygen. Therefore, their atoms cannot take up electrons easily. They can acquire ns^(2)np^(6) configuration by sharing two electrons with the atoms of other elements and thus, exhibit +2 oxidation state in their compounds. In addition to this, their atoms have vacant d-orbitals in their valence shell to which electrons can be promoted from the p and s-orbitals of the shell. As a result, they can show +4 and +6 oxidation states shell. The nature of the compounds of sulphur having +4 oxidation state is :

Passage-IV : Sulphur and rest of the elements of group 16 are less electronegative than oxygen. Therefore, their atoms cannot take up electrons easily. They can acquire ns^(2)np^(6) configuration by sharing two electrons with the atoms of other elements and thus, exhibit +2 oxidation state in their compounds. In addition to this, their atoms have vacant d-orbitals in their valence shell to which electrons can be promoted from the p and s-orbitals of the shell. As a result, they can show +4 and +6 oxidation states shell. Like sulphur, oxygen does not show +4 and +6 oxidation states. The reason is :

(A): C Cl_(2) does not undergo hydrolysis where as SiCl_(4) is readily hydrolysed. (R) : Carbon has no d-orbitals in its valence shell, but silicon has vacant d-orbitals in its valence shell.

The order of repulsion of different types of electron pairs in valence shell of central atom in a molecule is………

(A): GeF_(4) and SiCl_(4) act as Lewis bases. (R) : Ge and Si have d-orbitals to accept electrons

AAKASH SERIES-CHEMICAL BONDING-OBJECTIVE EXERCISE-2A (COVALENT AND DATIVE BOND)
  1. The element that exhibits neither electrovalency nor covalency is

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  2. The attraction that non-polar molecules have for each other is primari...

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  3. The compound which contains both ionic and covalent bonds is

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  4. Which of the following ion has maximum polarising power

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  5. The bond between chlorine and bromine in BrCl is

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  6. Oxygen cannot exhibit tetravalency and hexavalency like sulphur. This ...

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  7. The covalency of nitrogen in HNO2 is

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  8. van der Walls forces are maximum in the following substance

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  9. An aqueous solution of silver nitrate gives a white precipitate with

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  10. Which of the following is very much volatile ?

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  11. Which of the following is truely covalent?

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  12. Which of the following is covalent?

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  13. If the electronegativity of two atoms is low, then expected bond betwe...

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  14. Direct overlap leads

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  15. The bonds present in N2O5 are

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  16. In which type of bond fomation, can a proton participate?

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  17. The bonds present in [Cu(NH3)4] SO4 between copper and ammonia are

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  18. The types of bonds present in CuSO4.5H2 O are

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  19. (A): BeF2 is predominently a covalent compound. (R) : Electronegativit...

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  20. (A) : SiF4 has octet configuration, but acts as an electron pair accep...

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