The correct Lewis structure for the K+ ion is shown below:
What is the Lewis structure?
Lewis structures are described diagrams that show the bonding between atoms of a molecule, as well as the lone pairs of electrons that may exist in the molecule.
The Lewis dot structure of an element is the structure that shows the number of valence electrons. As an example, in the case of lithium ion, there will be no dots in its structure because the electron in its valence shell is removed from its system.
We know that potassium has only 1 electron in its valence shell and if it is ionized, only 1 electron will be removed which is why there is no dot in its structure.
There are a number of steps to write the Lewis structure and they include:
Step 1: Determine the total number of valence electrons in the element.
Step 2: Write the skeleton structure of the molecule.
Step 3: Use two valence electrons to form each bond in the skeleton structure.
Step 4: Try to satisfy the octets of the atoms by distributing the remaining valence electrons as nonbonding electrons.
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