Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
JEE MainChemistryChemical Bonding and Molecular Structure

The incorrect statement regarding propyne is

Options

  1. AThe carbon-carbon single bond is longer than the carbon-carbon triple bond
  2. BIt contains exactly two bonds
  3. CAll the atoms in the molecule lie in a straight line
  4. DIt contains both sp and sp^3 hybridized carbon atoms

Correct answer

C. All the atoms in the molecule lie in a straight line

Step-by-step solution

The structure of propyne is CH₃-C CH . The carbon atoms involved in the triple bond are sp hybridized, while the methyl carbon is sp^3 hybridized. Thus, it contains both sp and sp^3 hybridized carbons. The C-C single bond ( sp^3-sp ) is longer than the C C triple bond ( sp-sp ). The molecule contains two bonds in the triple bond. While the C-C C-H backbone is linear, the hydrogen atoms of the methyl group are arranged tetrahedrally. Therefore, not all atoms in propyne lie in a straight line. The statement claiming

Practice Chemical Bonding and Molecular Structure on Quantrex Academy →

More from Chemical Bonding and Molecular Structure

The correct order of dipole moments for the given species is 2026Consider the following species: SOCl ₂ , XeOF ₄ , ClF ₃ , ClF ₅ , XeF ₅^+ , SO ₃²⁻ , XeF ₃^+ , SF ₄ List-I contains different molecular shapes and List-II contains total number of 2026The correct order of ONO bond angle in the given species is 2026Bromine trifluoride autoionizes to form BrF ₂^ and BrF ₄^ . The shapes of the cation and anion are respectively ________, and ________. 2026Given below are two statements : Statement I : The number of compounds among SO₂ , SO₃ , SF₄ , SF₆ and H₂ S in which sulphur does not obey the Octet rule is 3 . Statement II : Amon 2026Given below are two statements : Statement I : F ₂ O Statement II : SiF ₄ , SnF ₄ and PbF ₄ are ionic in nature. In the light of the above statements, choose the correct answer fro 2026The pairs among A = [ SO ₃²⁻, CO ₃²⁻] , B = [ O ₂²⁻, F ₂] , C = [ CN ^-, CO ] , D = [ NH ₃, H ₃ O ^+] and E = [ MnO ₄²⁻, CrO ₄²⁻] that do not have similar Lewis dot structure are 2026The covalent radii of atoms A and B are r_A and r_B , respectively. The covalent bond length and total length of AB molecule are respectively 2026 Full Chemical Bonding and Molecular Structure list All JEE Main PYQs