Given the formula representing a molecule: h – c (tripple bond) c – hthe molecule isa) symmetrical and polarb) symmetrical and nonpolarc) asymmetrical and polard) asymmetrical and nonpolar

B) Symmetrical and nonpolar  

Step-by-step explanation:

The formula is H-C≡C-H.

Each C atom has two electron regions, so VSEPR theory predicts a linear molecular geometry (see image below).

The molecule is symmetrical, because the green line divides the molecule into two halves that are mirror images of each other.

The C-H bonds are slightly polar, because C is more electronegative than H (µ ≈ 0.4 D).

The C atoms are partially negative (red), while the H atoms are partially positive (blue).

However, the two C-H bond dipoles point in opposite directions, so they cancel each other. The molecule has no net dipole moment.

Acetylene is nonpolar.

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