33 public questions tagged with this topic.
2-Nitrophenol has intramolecular hydrogen bonding, reducing intermolecular forces and lowering its boiling point, while 4-nitrophenol has intermolecular hydrogen bonding, increasing its boiling point.
Ref: NCERT Class 12 Chemistry > Chapter 7: Alcohols, Phenols and Ethers > Topic: Physical Properties and Acidity of Alcohols and Phenols
Pentane-2,4-diol (CH₃-CH(OH)-CH₂-CH(OH)-CH₃) has a 5-carbon chain, as counted from one end to the other: CH₃-CH-CH₂-CH-CH₃.
Ref: NCERT Class 12 Chemistry > Chapter 7: Alcohols, Phenols and Ethers > Topic: Chemical Reactions of Phenols and Ethers and Uses
Dipole moment depends on electronegativity difference and bond length. CH₃F has the highest dipole moment due to fluorine's high electronegativity.
Ref: NCERT Class 12 Chemistry > Chapter 6: Haloalkanes and Haloarenes > Topic: Physical Properties - Boiling Point Dipole Moment Solubility
Benzene has a planar hexagonal ring with sp2 hybridized carbons, resulting in bond angles of 120°.
Ref: NCERT Class 11 Chemistry > Chapter 9: Hydrocarbons > Topic: Aromatic Hydrocarbons - Structure of Benzene and Resonance
In HC≡N (hydrogen cyanide), the carbon forms a triple bond with nitrogen and a single bond with hydrogen, indicating sp hybridization.
Ref: NCERT Class 11 Chemistry > Chapter 8: Organic Chemistry - Some Basic Principles and Techniques > Topic: Isomerism - Stereoisomerism - Geometrical and Optical Isomerism
In C₂H₄ (ethene), the C=C double bond has a bond length of ~134 pm, typical for carbon-carbon double bonds.
Ref: NCERT Class 11 Chemistry > Chapter 4: Chemical Bonding and Molecular Structure > Topic: Valence Bond Theory and Hybridisation - sp sp2 sp3 dsp2
In C₂H₂ (ethyne), the triple bond between carbons consists of 1 sigma and 2 pi bonds, so there are 2 pi bonds total.
Ref: NCERT Class 11 Chemistry > Chapter 4: Chemical Bonding and Molecular Structure > Topic: Valence Bond Theory and Hybridisation - sp sp2 sp3 dsp2
In CH₄ , carbon uses one s and three p orbitals to form four sp³ hybrid orbitals, resulting in a tetrahedral shape.
Ref: NCERT Class 11 Chemistry > Chapter 4: Chemical Bonding and Molecular Structure > Topic: Valence Bond Theory and Hybridisation - sp sp2 sp3 dsp2
In C₂H₆ (ethane), the C-C single bond has a bond length of ~154 pm, typical for carbon-carbon single bonds.
Ref: NCERT Class 11 Chemistry > Chapter 4: Chemical Bonding and Molecular Structure > Topic: Valence Bond Theory and Hybridisation - sp sp2 sp3 dsp2
In NF₃ , nitrogen has 4 electron pairs (3 bonding, 1 lone), requiring sp³ hybridization, forming a trigonal pyramidal shape.
Ref: NCERT Class 11 Chemistry > Chapter 4: Chemical Bonding and Molecular Structure > Topic: VSEPR Theory and Shapes of Molecules
In I₃⁻ , the central iodine is sp³d hybridized with 5 electron pairs (2 bonding, 3 lone), resulting in a linear shape.
Ref: NCERT Class 11 Chemistry > Chapter 4: Chemical Bonding and Molecular Structure > Topic: Kossel-Lewis Approach and Octet Rule and Lewis Structures
In BCl₃ , boron has 6 electrons around it (3 bonds), less than an octet, due to having only 3 valence electrons.
Ref: NCERT Class 11 Chemistry > Chapter 4: Chemical Bonding and Molecular Structure > Topic: Kossel-Lewis Approach and Octet Rule and Lewis Structures
