The central atom in SF6 is surrounded by a. five single bonds, one double bond, and one lone pair of electrons. b. four single bonds, two double bonds, and no lone pairs of electrons. c. six single bonds and no lone pairs of electrons. d. six single bonds and one lone pair of electrons. e. six single bonds and two lone pairs of electrons.

Which supports the idea that birds and butterflies both have wings but they do not have a common ancestor with wings? a. the wings are analogous structures that evolved differently and do not have a similar internal structure. b. the wings are homologous structures that evolved differently and do not have a similar internal structure. c. wings of birds are vestigial structures, but the wing structures of bats are not vestigial. d. wings of bats are vestigial structures, but the wing structures of birds are not vestigial

What are the chemical names of these compounds? ke: mg3n2: reset next

How do dying stars contribute to the formation of planets