Identify whether or not the following structures are convergent traits .

1) tailbone of human and tail of dogs
2) wlngs of bats and flippers of whales
3) true roots and root - like stems(rhizomes) of plants.
4) webbed feet of duck and otters.
5) long snout of egg- laying echidna and placental giant anteater.
6) flippers of dolphins and fins of fish
7) cactus spin and tree leaf

What best explains whether bromine (br) or neon (ne) is more likely to form a covalent bond? bromine forms covalent bonds because it has seven valence electrons, but neon has eight valence electrons and already fulfills the octet rule. bromine forms covalent bonds because it has many electron shells, but neon has only two electron shells and is tightly bound to its electrons. neon forms covalent bonds because it can share its valence electrons, but bromine has seven valence electrons and can gain only one more electron. neon forms covalent bonds because it has only two electron shells, but bromine has many electron shells and will lose electrons in order to fulfill the octet rule.