List of top Chemistry Questions on Chemical bonding and molecular structure asked in AP EAPCET

Formal charge on sulphur atom in the following three Lewis structures I, II and III respectively is \[ \text{I.}\quad \ddot{S}=C=\ddot{N} \] \[ \text{II.}\quad :S-C\equiv N: \] \[ \text{III.}\quad :S\equiv C-N: \]
Which of the following statements are correct about \(\mathrm{CO_3^{2-}}\) ion?
  1. The hybridisation of the central atom is \(sp^2\).
  2. The average formal charge on each oxygen atom is \(-\frac{2}{3}\).
  3. The resonance hybrid structure does not have one C--O single bond and two C=O double bonds; all C--O bonds are equivalent.
  4. All C--O bond lengths are equal.
In which of the following, the number of valence electrons is maximum?
Identify the correct set of molecules with zero dipole moment:
Which of the following sets are correctly matched? {|c|c|c|} Set & Molecule & Geometry
I & $\text{BrF}_5$ & Square pyramidal
II & $\text{XeF}_6$ & Distorted octahedral
III & $\text{SF}_4$ & Square planar
IV & $\text{PbCl}_2$ & Linear
Assertion (A): Carbon can form $p\pi - p\pi$ bonds with itself and with other small sized and highly electronegative atoms.
Reason (R): Other heavier elements of group 14 can also form $p\pi - p\pi$ bonds.
Choose the correct option:
In which of the following, the molecules are arranged in correct order of their dipole moments?
In which of the following, the species are arranged in the decreasing order of their bond dissociation enthalpies?
The combination of which of the following gives an ionic compound with maximum covalent character:
In the Lewis dot structure of carbonate ion shown under, the formal charges on the oxygen atoms \(1,2\) and \(3\) are respectively:
The set of molecules in which the central atom is not obeying the octet rule is
The formal charges of atoms (1), (2) and (3) in the ion \[ \left[\overset{(1)}{O}=\overset{(2)}{N}=\overset{(3)}{O}\right]^+ \] is