The User should Add another chlorine atom.
The chemical bond that is formed between non-metals is called covalent bonds.
Covalent bonding occurs when these non-metals share one or more pairs of electrons to attain the electron configuration of inert gases.
From the image of the question attached, the covalent bond existing between beryllium and chlorine would be complete when another chloride atom is added.
This is because the beryllium needs to share the remaining electron on its outer most shell to attain the electron configuration of inert gases.
This can be shared with chlorine which needs one more atom to complete the outermost shell with eight electrons.
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https://brainly.com/question/24095236
