This is because butterfly caterpillars are host specific. Plant-wise, the caterpillars of some butterfly species like asters, black-eyed Susan, clover, lupines, milkweed, sedum or violets. Aspen, birch, cherry, hackberry, oak or willow trees make caterpillars of other butterfly species equally happy.
each Br-F bond would be polar or BF4-, there is an extra electron making this a polar molecule. PCl5 has the Cl atoms that must be as far apart from each other as possible and therefore would create equal but opposite pulls.ach Br-F bond would be polar or BF4-, there is an extra electron making this a polar molecule. PCl5 has the Cl atoms that must be as far apart from each other as possible and therefore would create equal but opposite pulls.
Are the bonds in each of the following substances ionic, nonpolar covalent, or polar covalent? (a) KCl ionic nonpolar covalent polar covalent (b) P4 ionic nonpolar covalent polar covalent (c) BF3 ionic nonpolar covalent polar covalent (d) SO2 ionic nonpolar covalent polar covalent (e)...nswers. Best Answer: KCL is ionic P4 is nonpolar covalent BF3 is nonpolar covalent SO2 is polar covalent Br2 is nonpolar covalent NO2 is polar covalent I am almost sure that's how it is..