The geometries of the molecules BF3 and NF3 are trigonal planar and trigonal pyramidal repectively. Which statement best accounts for the difference? a. N is more electronegative than B. b. BF3 is ionic, while NF3 is covalent. c. B utilizes sp hybridization, while N does not. d. N has a non-bonding pair of valence electrons, while B does not. [2] A sodium ion, Na+, contains the same number of electrons as a. A sodium ion, Na b. A magnesium atom, Mg c. A potassium ion, K+ d. A neon atom, Ne