Chemical BondingMolecular Geometry and Bond Angle146Choose 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 Hybridization147Choose 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
Chemical BondingOctet Rule and Exceptions148Choose the best answerWhich molecule does not obey the octet rule because the central atom has an expanded valence shell?ANF₃BCCl₄CCF₄DPCl₅ Like 0 Discuss 0Share
Chemical BondingMolecular Geometry and Polarity149Choose the best answerThe shape and polarity of H₂S are:ABent and polarBPyramidal and polarCLinear and non-polarDBent and non-polar Like 0 Discuss 0Share
Chemical BondingDipole Moment150Choose the best answerMolecular polarity is commonly expressed in terms of:ABond strengthBBond lengthCDipole momentDAtomic size Like 0 Discuss 0Share