Chemical BondingCovalent Bonds in Ammonium Ion141Choose the best answerWhich compound contains the greatest number of N–H covalent bonds?ANH₃BNH₄ClCCH₄DCO Like 0 Discuss 0Share
Chemical BondingSigma and Pi Bonds142Choose the best answerWhich type of bond forms first when two atoms form a multiple covalent bond?Aσ bondBπ bondCDouble bondDTriple bond Like 0 Discuss 0Share
Chemical BondingMolecular Geometry and Polarity143Choose the best answerWhich molecule is non-polar although it contains polar bonds?AHClBH₂OCSO₃DSO₂ Like 0 Discuss 0Share
Chemical BondingMolecular Geometry and Bond Angle144Choose the best answerThe shape and bond angle of BF₃ are:ATrigonal pyramidal, 107°BTetrahedral, 109.5°CTrigonal planar, 120°DTrigonal pyramidal, 120° Like 0 Discuss 0Share
Chemical BondingBond Length, Bond Order and Hybridization145Choose the best answerThe C–C bond lengths in ethane, ethene and ethyne are approximately 154 pm, 133 pm and 120 pm, respectively. This decrease in bond length is mainly due to:AIncreasing s-character from sp³ to sp hybridizationBIncreasing bond order from single to triple bondCBoth A and BDIncreasing atomic size of carbon Like 0 Discuss 0Share