Choose the correct statement regarding molecule:
1. It does not contain a plane of symmetry
2.
3. Lone pair has greater than 33.3% s-character
4. Central atom used one d-orbital in bonding.
Which of the following compounds can form H-bonding with each other?
(a)
(b) Phenol and
(c)
(d)
Which of the following compound is planar and non-polar?
(1)
(2)
(3)
(4)
The incorrect statement(s) regarding species is:
(1) If electronegativity of surrounding element 'X' is less than 2.5, then central carbon atom used almost 33% s-character in their hybrid bonding orbitals
(2) If electronegativity of surrounding element 'X' is more than 2.5, then central carbon atom used almost 25% s-character in their hybrid bonding orbitals
(3) If 'X' is 'F', then species should be polar and pyramidal
(4) If 'X' is H, then species should be polar and planar
has a net dipole moment while Be has zero dipole moment because :
(1) F is more electronegativity than oxygen
(2) Be is more electronegativity than oxygen
(3) molecule is linear and Be is bent
(4) molecule is linear and is bent
Which of the following overlops is incorrect (assuming Z axis internuclear axis)?
(A) (B)
(C) (D)
(E) (F)
(a) A,B,C (b) C,F
(c) B,E (D) B,C,D
How many sigma bonds are in a molecule of diethyl ether,
1. 14
2. 12
3. 8
4. 16
Which of the following species has a zero dipole moment?
(ii) (iii) (iv)
1. | (i) and (iv) | 2. | (ii) and (iv) |
3. | (iii) and (iv) | 4. | (i), (iii) and (iv) |
The correct statement about carbene is:
(1) In singlet carbene, carbon is -hybridized whereas in triplet carbene, carbon is sp-hybridized
(2) Triplet carbene is less stable than singlet carbene
(3) Stability of halocarbenes is: CHF>CHCL>CHBr
(4) None of the above
Which of the following is a pair of polar molecules?
1.
2.
3.
4.