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Exercise: Aromatic or not: The Frost circle

Exercise

Hückel's rule says that a compound must have ...

Please make a choice.

Please make a choice.

correct

wrong

partly correct

This is the right answer

Exercise

In order to be aromatic all bonding molecular orbitals (MO) of a compound must be ...

Please make a choice.

Please make a choice.

correct

wrong

partly correct

This is the right answer

	... occupied incompletely, and there must not be any electron in a destabilizing antibonding or non-bonding orbital.	No, sorry.
	... occupied completely, and there must not be any electron in a stabilizing antibonding or non-bonding orbital.	Sorry, that is not correct.
	... occupied completely, and there must be at least one proton in an antibonding or non-bonding orbital.	No, sorry. Protons in orbitals???
	... occupied completely, and there must not be any electron in a destabilizing antibonding or non-bonding orbital.	Yes, that is correct.