how is the shape of hydrogen cyanide molecule crucial to its physiological function?

Question

Why does it take this shape, using electron repulsion theory to expalin it., and explain how the shape accounts for the biological activity of HCN

Answer 1

HCN is iso electronic with Oxygen, and so has a similar bond structure with iron in Haemoglobin.
However, the bond is much more stable, and so the HCN does not dissociate from the iron, thus locking it from further use as an oxygen carrier

Answer 2

the answer to this question is A because of the fact even nonetheless the N would not could desire to obey the octet rule, it remains lacking a lone pair that's not drawn in there ( supposing that there is a triple bond between the C and the N.) to respond to this question first you may desire to entice the lewis shape. Carbon would be interior the middle because of the fact that's the main reactive and it has 4 v.electrons. the 1st electron will pair with the hydrogen as a consequence pleasing the hydrogen area of the molecule. now there are 3 v.electrons ultimate on the carbon. nitrogen has 5 v.electrons so a million of the 5 bonds with a million of the three v.e from the carbon. the different 2 v.e from the carbon make a pi bond ( double bond) with the nitrogen. ok soo we've 4 electrons left with the nitrogen and nitrogen being a factor that has a tendency to make triple bonds, one pair of the two ultimate pairs from the nitrogen makes a triple bond with the carbon as a consequence leaving one pair in the back of. this pair is left in the back of cuz it would not obey the octet rule if there grew to become right into a tetra (4) bond. wish this helps

Answer 3

The shape follows directly from VSEPR, since there is a triple bond between C and N, leaving no lone pairs on C.

Its physiological function (! Lethal poison) is based on the ability of the CN- ion to coordinate to iron in heme-type molecules, thereby disrupting electron transport processes. I don't quite see what the shape of the molecule has got to do with that.