Given below are two statements : Statement I : The number of pairs among [ SiO _ 2 , CO _ 2 ], [ SnO , SnO _ 2 ], [ PbO , PbO _ 2 ] and [ GeO , GeO _ 2 ], which contain oxides that are both amphoteric is 2. Statement II : BF _ 3 is an electron deficient molecule, can act as a Lewis acid, forms adduct with NH _ 3 and has a trigonal planar geometry. In the light of the above statements, choose the correct answer from the options given below :
B. Both Statement I and Statement II are true
Statement I: Checking amphoteric nature of oxide pairs: [SiO_2, CO_2]: Both acidic (non-metal oxides) [SnO, SnO_2]: Both amphoteric [PbO, PbO_2]: PbO is amphoteric but PbO_2 is predominantly acidic/oxidizing [GeO, GeO_2]: Both amphoteric (Ge is metalloid) 2 pairs have both oxides amphoteric. Statement I is true. Statement II: BF_3 has B with 6 valence electrons (electron deficient), acts as Lewis acid, forms BF_3 NH_3 adduct, has sp^2 hybridization giving trigonal planar geometry. Statement II is true.
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