Predict the molecular shape of methane. trigonal pyramidal bent linear tetrahedral trigonal planar (120°) Predict the molecular shape of the carbonate ion. tetrahedral linear trigonal pyramidal bent trigonal planar (120°) Predict the molecular shape of carbon dioxide. trigonal pyramidal linear trigonal planar (120°) tetrahedral bent Predict the molecular shape of the sulfite ion. trigonal planar (120°) linear bent trigonal pyramidal tetrahedral