Formaldehyde is an organic compound. Each molecule includes two hydrogen (H) atoms, one oxygen (O) atom, and one carbon (C) atom
. Below are the dot structures for each of these elements. At left, a purple circle labeled H surrounded by two concentric circles, the inner with nothing on it, the outer with 1 small green spheres. In center, a purple circle labeled O surrounded by two concentric circles, the inner with 2 small green spheres, the outer with 6 small green spheres. At right, a purple circle labeled C surrounded by two concentric circles, the inner with 2 small green spheres, the outer with 4 small green spheres.
Which diagram shows how the covalent bonds most likely form in a formaldehyde molecule?
C connected above and below to H's by 1 line each. C also connected by two lines to O, which has 2 dots each above and below.
C connected above and below to H's by 1 line each. C also connected by three lines to O, which has 2 dots each above and below.
O connected above and below to H's by 1 line each. O also connected by two lines to C, which has 2 dots above.
O connected above and below to H's by 1 line each. O also connected by two lines to C, which has 2 dots each above and below.
