Using vsepr theory, which of these molecules does not have a trigonal planar shape?
a) ammonia (nh3)
b) formaldehyde (h2co)
c) sulfur trioxide (so3)
d) boron trifluoride (bf3)

Ammonia does not have a trigonal shape.

Explanation:

According to VSEPR theory:

Molecules with 3 sigma bonds and no lone pair possess trigonal planar shape irrespective of the number of pi bonds.

Hence except ammonia all other molecules given possess trigonal planar shape.

the earth would become to overheated and everything alive on it will eventually die from overheating. plants will eventually die as well, water will evaporate, and it will be nothing but a hot planet without anything living on it.

im pretty sure its b