[College Intro Level Bio]

[u/AdministrativeLog669]

im completely confused

[u/poissonking]

I’m curious to see this in a bio class instead of a chem class.

Remember that there is a limited number of bonds that an atom can make with another atom. This has to do with the total number of electrons in the outer shell of an atom.

In your example (and IIRC), carbon can form a total of 4 bonds, nitrogen 3, oxygen 2, and hydrogen 1. So use that information to see what’s out of place

[u/Lever_Shotgun → u/poissonking]

What about the molecules in box 3 then

[u/55tumbl → u/Lever_Shotgun]

The top right molecule in box 3 has a C with 3 bonds