STANDARD Chemistry Chemical Bonding And Molecular Structure Class 11 Questions

According to VSEPR theory,

The shape of water molecule which should be tetrahedral has a bent or distorted tetrahedral shape with a bond angle 104.5°. What could be the reason for this?

Match the molecules given in column I with their shapes given in column II and mark the appropriate choice.

Which of the following does not show octahedral geometry?

Structure of XeF₄ is

Which of the following statements is not true?

Which of the following orbitals will not form sigma bond after overlapping?

Bond order of N₂⁺, N₂⁻ and N₂ will be

The formation of the oxide ion O₂⁻(g) requires first an exothermic and then an endothermic step as shown below O(g) + e⁻ = O⁻(g) ΔH° = -142 kJ mol⁻¹ O⁻(g) + e⁻ = O₂⁻(g) ΔH° = 844 kJ mol⁻¹ This is because

According to molecular orbital theory, which of the following will not exist?

Which of the following formulae does not show the correct relationship?

Which of the following relationships is true?

Which of the following molecules is paramagnetic in nature?

Among the following molecules, (i) XeO₃ (ii) XeOF₄ (iii) XeF₆, those having same number of lone pairs on Xe are

Match the column I with column II and mark the appropriate choice.

Isostructural species are those which have the same shape and hybridisation. Among the given species, identify the isostructural pairs.

In PO₄³⁻ ion, the formal charge on the oxygen atom of P–O bond is

Which of the following statements is not correct from the view point of molecular orbital theory?

Which of the following options represents the correct bond order?

Which of the following, set of molecules will have zero dipole moment?

Which of the following order is correct?

Which of the following pairs have different hybridisation and same shape? (i) NO₃⁻ and CO₃²⁻ (ii) SO₂ and NH₂⁻ (iii) XeF₂ and CO₂ (iv) H₂O and NH₃

The dipole moments of CCl₄, CHCl₃ and CH₄ are in the order

Which of the following diatomic molecular species has only π bonds according to molecular orbital theory?

Which of the following is paramagnetic?

Point out the incorrect statement about resonance.

The correct decreasing order of basic strength of the following species is ________. H₂O, NH₃, OH⁻, NH₂⁻