Answer:
If the available number of valence electrons for a molecule or ion does not complete all of the octets, then multiple bonds must be drawn.
Explanation:
If the available number of valence electrons for a molecule or ion does not complete all of the octets, then multiple bonds must be drawn.
We must note that Lewis structures are representations of molecules Using dots to show the number of valence electrons on the valence shell of the atoms of each of the constituent elements in the molecule. Each atom is expected to have an octet of electrons on its outermost shell.
Many times, we encounter Lewis structures in which the octet of some atoms are incomplete. This means that the atoms have less than eight outermost electrons.
In such cases, we must invoke the idea of multiple bonds to account for the incomplete octet.
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