10. Challenge Write the electron configuration of the following elements. a. the group 2 element in the fourth period
b. the group 12 element in the fourth period
c. the noble gas in the fifth period
d. the group 16 element in the second period

Select the atomic models that belong to the same element

The first element on the periodic table of elements is carbon. a. true b. false

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