H2O has a net dipole moment while BeF2 has zero dipole moment because :

(a) F is more electronegativity than oxygen 

(b) Be is more electronegativity than oxygen 

(c) H2O  molecule is linear and BeF2 is bent 

(d) BeF2 molecule is linear and H2O is bent

Concept Questions :-

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Which of the following overlops is incorrect (assuming Z axis internuclear axis)?

(A) 2py +2pyπBond formation        (B) 2px+2pxσBond formation

(C) 3dxy+3dxyπ Bond formation        (D) 2s+2pyπBond formation

(E)3dxy+3dxyδBond formation             (F)2pz+2pzσ Bond formation

(a) A,B,C                      (b) C,F

(c) B,E                         (D) B,C,D

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How many sigma bonds are in a molecule of diethy either,C2H5OC2H5

(a) 14          (b) 12         (c) 8          (d) 16

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Correct set of species with zero dipole moment is :

(i) CO2 (ii) COCL2 (iii) CH2 CL2 (iv) BCL3

(a) (i) and (iv) 

(b) (ii) and (iv) 

(c) (iii) and (iv) 

(d) (i) , (iii) and (iv) 

 

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The correct statement about carbene (CH2) is:

(a) In singlet carbene, carbon is sp2-hybridized whereas in triplet carbene, carbon is sp-hybridized

(b) Triplet carbene is less stable than singlet carbene

(c) Stability of halocarbenes is: CHF>CHCL>CHBr

(d) None of the above

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Which pair of molecules are polar species?

(a) CO2 and H2O

(b) BF3 and PCL3

(c) SO2 and SCL2

(d) CS2 and SO3

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In which molecule does the chlorine atom has positive partial charge? 

(a) HCl

(b) BrCl 

(c) OCl2

(d) SCl2

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The incorrect order of lattice energy is:

(a)AlF3>MgF2          (b) Li3N>Li2O

(c) NaCl>LiF           (d)TiC>ScN

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Which of the following set of species have planar structures?

(a) I3-, CH3, CLO3-, SiF62-

(b) I3+, ICl4-, Al2Cl6, TeCl4

(c) SCl2, N2O5, SF4,XeOF4

(d) I2Cl6, XeF2, BrF4-

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Both NSiH33 and NHSiH32compounds have trigonal planer skeleton. Incorrect statement about both compound is :

(a) SiNSi bond angle in NHSiH32 > SiNSi bond angle in NSiH33

(b) N-Si bond length in NHSiH32>N-Si bond length in NSiH33

(c) N-Si bond length in NHSiH32<N-Si bond length in NSiH33

(d) Back bonding strength in NHSiH32> Back bonding strength in NSiH33

Concept Questions :-

Types of Bonding
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