To accurately identify the types of bonds shown in a diagram, I would need to see the diagram itself or have a description of it. However, I can provide a brief overview of the four types of bonds you mentioned:
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Covalent Bonds: These occur when atoms share electrons. Typically represented by a line between two atoms in diagrams.
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Hydrogen Bonds: These are weak attractions between a hydrogen atom and a more electronegative atom, often depicted with dotted lines in diagrams.
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Metallic Bonds: These involve a sea of shared electrons among a lattice of metal atoms, and are not usually represented in the same way as electron sharing or attraction in other bonds.
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Ionic Bonds: These are formed when one atom donates electrons to another, usually depicted by an arrow or a symbol indicating transfer of charge.
If you provide more context or a description, I can help you determine which type of bond is represented in the diagram.