This hydrocarbon is incomplete. draw the hydrogen
atoms and the bonds connecting them to carbon atoms
such that each carbon atom has four bonds. then record
the number of hydrogen atoms you drew using a text
box.

it should be all of them because it asks if you included all of those in your answer

explanation:

the right answer is c i just did the question.

the seeing the electronic configuration we can say that the element is fluorine.

fluorine is the most electronegative element in the periodic table.

but by only seeing the configuration we cannot say about its reactivity because we don't know if its configuration after excitation or by addition of electrons.

but if not then, it is the lightest halogen and exists as a highly toxic pale yellow diatomic gas at standard conditions. as the most electronegative element, it is extremely reactive: almost all other elements, including some noble gases, form compounds with fluorine.