Molecular geometry - Quiz
A) The total number of protons in a nucleus. B) The three-dimensional arrangement of atoms in a molecule. C) The speed at which a molecule moves in a gas. D) The mass of an atom.
A) Electron affinity B) Boiling point C) Bond angle D) Atomic weight
A) Chemical bonds break automatically at high temperatures. B) At high temperatures, the structure is averaged over more accessible geometries. C) Low temperatures increase the reactivity of molecules. D) Molecules become invisible at high temperatures.
A) IR spectroscopy B) Visible light spectroscopy C) Mass spectrometry D) Atomic absorption spectroscopy
A) The number of neutrons in the nucleus. B) The nature of the chemical bonds connecting it to neighboring atoms. C) The color of the substance. D) The atmospheric pressure.
A) The average distance between the nuclei of two bonded atoms. B) The total length of the entire molecule. C) The size of the electron cloud around the nucleus. D) The distance between two electrons in a bond.
A) Three atoms. B) Five atoms. C) Four atoms. D) Two atoms.
A) Translation B) Molecular vibration C) Rotation D) Magnetic oscillation
A) They move at their maximum velocity. B) The molecule disintegrates. C) They show zero point quantum mechanical motion. D) All molecular motion stops completely.
A) The Rydberg constant B) The Boltzmann factor C) The Avogadro number D) The Pauli exclusion principle
A) The angle between two planes formed by four consecutive atoms. B) The bending of a single bond. C) The angle between two lone pairs. D) The distance between the two terminal atoms.
A) Orbital hybridisation B) Nuclear fusion C) Radioactive decay D) Electron capture
A) Inner shell electrons B) Sigma orbitals C) Unhybridized p orbitals D) Ionic interactions
A) Gas electron diffraction B) X-ray crystallography C) Mass spectroscopy D) Liquid chromatography
A) Too many rotational states are thermally populated. B) The bond lengths change to infinity. C) Spectroscopy equipment fails at high heat. D) Molecules evaporate too quickly.
A) Constitutional isomers B) Stereoisomers C) Diastereomers D) Enantiomers
A) Identical chemical properties B) Same bond angles C) Same 3D orientation D) Different atom connection orders
A) Same 3D orientation B) Different chemical formula C) Same connection order but different 3D orientation D) Different connection order
A) Structural and constitutional B) Enantiomers and diastereomers C) Planar and octahedral D) Linear and tetrahedral
A) 180 degrees B) 120 degrees C) 90 degrees D) 105 degrees
A) Ammonia B) Carbon dioxide C) Methane D) Water
A) 90 degrees B) 180 degrees C) 120 degrees D) 109.5 degrees
A) Trigonal planar B) Bent or V-shaped C) Tetrahedral D) Octahedral
A) 109.5 degrees B) 105 degrees C) 120 degrees D) 180 degrees
A) 180 degrees B) 109.47 degrees C) 120 degrees D) 90 degrees
A) Tetrahedral B) Trigonal planar C) Octahedral D) Linear
A) Four B) Six C) Eight D) Three
A) 120 degrees B) 180 degrees C) 105 degrees D) 90 degrees
A) Boron trifluoride B) Methane C) Sulfur hexafluoride D) Ammonia
A) Trigonal planar B) Linear C) Tetrahedral D) Trigonal pyramidal
A) Zero B) One C) Two D) Three
A) Structural isomerism B) Linear algebra C) VSEPR D) Quantum mechanics
A) As spheres (balls) B) As lines C) As a smooth pipe D) They are not represented
A) Electron density plot B) Line or stick C) Spacefilling D) Cartoon
A) As a series of overlapping spheres B) As a smooth pipe C) As an electron density cloud D) As individual atoms and bonds |
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