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Index

To see how all of these terms connect, it helps to look at them as a hierarchical tree. They flow from the biggest category down to the absolute smallest parts.

Here is the hierarchy of how they interconnect:

                         [ MATTER ]
                 (Anything with mass & volume)
                             |
              +--------------+--------------+
              |                             |
        [ ELEMENTS ]                  [ COMPOUNDS ]
    (Pure; one type of atom)     (Two or more different atoms)
              |                             |
      +-------+-------+                     |
      |               |                     |
  [ ATOMS ]      [ MOECULES ]          [ MOLECULES ]
(Single atom,   (Multiple same         (Multiple diff. 
 e.g., H or Mg)  atoms, e.g., O₂)       atoms, e.g., H₂O)
      |               |                     |
      +---------------+---------------------+
                      |
           [ SUBATOMIC PARTICLES ]
          (Protons, Neutrons, Electrons)

The Two Main Interconnections to Remember:

  • The "Building Block" Connection:
    Subatomic Particles make up \(\rightarrow\) Atoms.
    Atoms bond together to make \(\rightarrow\) Molecules.
    Those atoms and molecules clump together in giant numbers to make \(\rightarrow\) Matter you can actually see.
  • The "Type vs. Piece" Connection (The trickiest part):
  • Element vs. Atom: An element is the chemical identity (like Gold or Oxygen). An atom is the physical single piece of it.
  • Compound vs. Molecule: A compound is the chemical identity of a mixture (like Water). A molecule is the single physical unit of it (one oxygen bonded to two hydrogens).

Chemical bonds are the glues that hold atoms together, but the way they share or transfer electrons completely changes the properties of the resulting material.

Here is the breakdown of how ionic, covalent, coordinate covalent, and metallic bonds form, along with how their properties stack up against one another.


āϰāĻžāϏāĻžā§ŸāύāĻŋāĻ• āĻŦāĻ¨ā§āϧāύ⧇āϰ āϏāĻŽā§āĻĒā§‚āĻ°ā§āĻŖ āϤ⧁āϞāύāĻžāĻŽā§‚āϞāĻ• āĻ›āĻ•

āĻŦ⧈āĻļāĻŋāĻˇā§āĻŸā§āϝ / āϟāĻĒāĻŋāĻ• āφāϝāĻŧāύāĻŋāĻ• āĻŦāĻ¨ā§āϧāύ (Ionic) āϏāĻŽāϝ⧋āĻœā§€ āĻŦāĻ¨ā§āϧāύ (Covalent) āϏāĻ¨ā§āύāĻŋāĻŦ⧇āĻļ āϏāĻŽāϝ⧋āĻœā§€ (Coordinate) āϧāĻžāϤāĻŦ āĻŦāĻ¨ā§āϧāύ (Metallic)
āĻ—āĻ āύ⧇āϰ āĻŽā§‚āϞ āĻĒā§āϰāĻ•ā§āϰāĻŋ⧟āĻž āϧāĻžāϤ⧁ āĻĨ⧇āϕ⧇ āĻ…āϧāĻžāϤ⧁āϤ⧇ āχāϞ⧇āĻ•āĻŸā§āϰāύ āϏāĻŽā§āĻĒā§‚āĻ°ā§āĻŖ āĻ¸ā§āĻĨāĻžāύāĻžāĻ¨ā§āϤāϰāĻŋāϤ āĻšā§Ÿā§‡ āĻ•ā§āϝāĻžāϟāĻžā§Ÿāύ āĻ“ āĻ…ā§āϝāĻžāύāĻžā§Ÿāύ āϤ⧈āϰāĻŋ āĻ•āϰ⧇āĨ¤ āĻĻ⧁āϟāĻŋ āĻ…āϧāĻžāϤāĻŦ āĻĒāϰāĻŽāĻžāϪ⧁āϰ āĻŽāĻ§ā§āϝ⧇ āχāϞ⧇āĻ•āĻŸā§āϰāύ āϏāĻŽāĻžāύāĻ­āĻžāĻŦ⧇ āĻļā§‡ā§ŸāĻžāϰ āĻŦāĻž āĻ­āĻžāĻ—āĻžāĻ­āĻžāĻ—āĻŋ āĻšā§ŸāĨ¤ āĻļā§‡ā§ŸāĻžāϰ āĻ•āϰāĻž āχāϞ⧇āĻ•āĻŸā§āϰāύ āĻœā§‹ā§œāĻž āϕ⧇āĻŦāϞ āĻāĻ•āϟāĻŋ āĻĒāϰāĻŽāĻžāϪ⧁ (āĻĻāĻžāϤāĻž) āĻĻā§‡ā§Ÿ, āĻ…āĻ¨ā§āϝāϜāύ (āĻ—ā§āϰāĻšā§€āϤāĻž) āĻļ⧁āϧ⧁ āĻ­āĻžāĻ— āĻ¨ā§‡ā§ŸāĨ¤ āϧāĻžāϤāĻŦ āĻĒāϰāĻŽāĻžāϪ⧁āϗ⧁āϞ⧋ āχāϞ⧇āĻ•āĻŸā§āϰāύ āĻ›ā§‡ā§œā§‡ āĻĻāĻŋā§Ÿā§‡ "āĻŽā§āĻ•ā§āϤ āχāϞ⧇āĻ•āĻŸā§āϰāύ⧇āϰ āϏāĻžāĻ—āϰ" āĻāĻŦāĻ‚ āĻĒāϜāĻŋāϟāĻŋāĻ­ āĻ†ā§Ÿāύ āϤ⧈āϰāĻŋ āĻ•āϰ⧇āĨ¤
āϏāĻžāϧāĻžāϰāĻŖ āĻ…āĻŦāĻ¸ā§āĻĨāĻž (āϘāϰ⧇āϰ āϤāĻžāĻĒāĻŽāĻžāĻ¤ā§āϰāĻžā§Ÿ) āĻ•āĻ āĻŋāύ āĻāĻŦāĻ‚ āϏ⧁āύāĻŋāĻ°ā§āĻĻāĻŋāĻˇā§āϟ āĻœā§āϝāĻžāĻŽāĻŋāϤāĻŋāĻ• āĻ•ā§āϰāĻŋāĻ¸ā§āϟāĻžāϞ āĻŦāĻž āϕ⧇āϞāĻžāϏāĨ¤ āĻ—ā§āϝāĻžāϏ, āϤāϰāϞ āĻ•āĻŋāĻ‚āĻŦāĻž āύāϰāĻŽ āĻ•āĻ āĻŋāύ āĻĒāĻĻāĻžāĻ°ā§āĻĨāĨ¤ āϏāĻžāϧāĻžāϰāĻŖāϤ āĻ—ā§āϝāĻžāϏ, āϤāϰāϞ āĻŦāĻž āύāϰāĻŽ āĻ•āĻ āĻŋāύ āĻĒāĻĻāĻžāĻ°ā§āĻĨāĨ¤ āωāĻœā§āĻœā§āĻŦāϞ, āϚāĻ•āϚāϕ⧇ āĻāĻŦāĻ‚ āĻļāĻ•ā§āϤ āĻ•āĻ āĻŋāύ āĻĒāĻĻāĻžāĻ°ā§āĻĨ (āĻŦā§āϝāϤāĻŋāĻ•ā§āϰāĻŽ: āĻĒāĻžāϰāĻĻ)āĨ¤
āĻ—āϞāύāĻžāĻ™ā§āĻ• āĻ“ āĻ¸ā§āĻĢ⧁āϟāύāĻžāĻ™ā§āĻ• āĻ…āĻ¤ā§āϝāĻ¨ā§āϤ āωāĻšā§āϚ (āϤ⧀āĻŦā§āϰ āĻ¸ā§āĻĨāĻŋāϰ āϤ⧜āĻŋā§Ž āφāĻ•āĻ°ā§āώāĻŖ āĻŦāϞ āĻ­āĻžāĻ™āϤ⧇ āĻĒā§āϰāϚ⧁āϰ āĻļāĻ•ā§āϤāĻŋāϰ āĻĒā§āĻ°ā§Ÿā§‹āϜāύ)āĨ¤ āĻ•āĻŽ āĻĨ⧇āϕ⧇ āĻŽāĻžāĻāĻžāϰāĻŋ (āĻ…āϪ⧁āϗ⧁āϞ⧋āϰ āĻŽāĻ§ā§āϝāĻ•āĻžāϰ āφāĻ¨ā§āϤāσāφāĻŖāĻŦāĻŋāĻ• āφāĻ•āĻ°ā§āώāĻŖ āĻŦāϞ āĻĻ⧁āĻ°ā§āĻŦāϞ āĻĨāĻžāϕ⧇)āĨ¤ āĻ•āĻŽ āĻĨ⧇āϕ⧇ āĻŽāĻžāĻāĻžāϰāĻŋ (āϏāĻžāϧāĻžāϰāĻŖ āϏāĻŽāϝ⧋āĻœā§€ āϝ⧌āϗ⧇āϰ āĻŽāϤ⧋āχ)āĨ¤ āωāĻšā§āϚ āĻĨ⧇āϕ⧇ āĻ…āĻ¤ā§āϝāĻ¨ā§āϤ āωāĻšā§āϚ (āĻĒāϜāĻŋāϟāĻŋāĻ­ āĻ†ā§Ÿāύ āĻ“ āχāϞ⧇āĻ•āĻŸā§āϰāύ āϏāĻžāĻ—āϰ⧇āϰ āφāĻ•āĻ°ā§āώāĻŖ āϤ⧀āĻŦā§āϰ)āĨ¤
āĻŦāĻŋāĻĻā§āĻ¯ā§ā§Ž āĻĒāϰāĻŋāĻŦāĻžāĻšāĻŋāϤāĻž āĻ•āĻ āĻŋāύ āĻ…āĻŦāĻ¸ā§āĻĨāĻžā§Ÿ āĻ…āĻĒāϰāĻŋāĻŦāĻžāĻšā§€, āϤāĻŦ⧇ āĻ—āϞāĻŋāϤ āĻŦāĻž āĻĒāĻžāύāĻŋāϤ⧇ āĻĻā§āϰāĻŦā§€āĻ­ā§‚āϤ āĻ…āĻŦāĻ¸ā§āĻĨāĻžā§Ÿ āϚāĻŽā§ŽāĻ•āĻžāϰ āĻĒāϰāĻŋāĻŦāĻžāĻšā§€āĨ¤ āϏāĻŦ āĻ…āĻŦāĻ¸ā§āĻĨāĻžāϤ⧇āχ āĻ…āĻĒāϰāĻŋāĻŦāĻžāĻšā§€ (āĻŽā§āĻ•ā§āϤ āχāϞ⧇āĻ•āĻŸā§āϰāύ āĻŦāĻž āĻ†ā§Ÿāύ āĻĨāĻžāϕ⧇ āύāĻž)āĨ¤ āϏāĻŦ āĻ…āĻŦāĻ¸ā§āĻĨāĻžāϤ⧇āχ āĻ…āĻĒāϰāĻŋāĻŦāĻžāĻšā§€āĨ¤ āĻ•āĻ āĻŋāύ āĻāĻŦāĻ‚ āϤāϰāĻ˛â€”āϏāĻŦ āĻ…āĻŦāĻ¸ā§āĻĨāĻžāϤ⧇āχ āĻĻāĻžāϰ⧁āĻŖ āĻĒāϰāĻŋāĻŦāĻžāĻšā§€ (āĻŽā§āĻ•ā§āϤ āχāϞ⧇āĻ•āĻŸā§āϰāύ āϚāϞāĻžāϚāϞ⧇āϰ āĻ•āĻžāϰāϪ⧇)āĨ¤
āϭ⧌āϤ āĻĒā§āϰāĻ•ā§ƒāϤāĻŋ (āφāϘāĻžāϤ āĻ•āϰāϞ⧇) āĻ…āĻ¤ā§āϝāĻ¨ā§āϤ āĻļāĻ•ā§āϤ āĻ•āĻŋāĻ¨ā§āϤ⧁ āĻ­āĻ™ā§āϗ⧁āϰ (Brittle); āφāϘāĻžāϤ āĻ•āϰāϞ⧇ āĻšā§‚āĻ°ā§āĻŖ āĻšā§Ÿā§‡ āϝāĻžā§ŸāĨ¤ āύāϰāĻŽ āĻ“ āύāĻŽāĻ¨ā§€ā§Ÿ (āĻŦā§āϝāϤāĻŋāĻ•ā§āϰāĻŽ: āĻšā§€āϰāĻž āĻŦāĻž āĻ•ā§‹ā§ŸāĻžāĻ°ā§āϟāĻœā§‡āϰ āĻŽāϤ⧋ āϜāĻžā§ŸāĻžāĻ¨ā§āϟ āĻ…āϪ⧁)āĨ¤ āύāϰāĻŽ āĻāĻŦāĻ‚ āύāĻŽāĻ¨ā§€ā§ŸāĨ¤ āϘāĻžāϤāϏāĻš āĻ“ āύāĻŽāĻ¨ā§€ā§Ÿ (Malleable & Ductile); āĻĒāĻŋāϟāĻŋā§Ÿā§‡ āĻšā§āϝāĻžāĻĒā§āϟāĻž āĻŦāĻž āϤāĻžāϰ āĻŦāĻžāύāĻžāύ⧋ āϝāĻžā§ŸāĨ¤
āϤ⧜āĻŋā§Ž āĻ‹āĻŖāĻžāĻ¤ā§āĻŽāĻ•āϤāĻžāϰ āĻĒāĻžāĻ°ā§āĻĨāĻ•ā§āϝ (\(\Delta \chi\)) āĻ…āύ⧇āĻ• āĻŦ⧇āĻļāĻŋ (āϏāĻžāϧāĻžāϰāĻŖāϤ ā§§.ā§­ āĻāϰ āĻŦ⧇āĻļāĻŋ)āĨ¤ āĻ•āĻŽ āĻĨ⧇āϕ⧇ āĻŽāĻžāĻāĻžāϰāĻŋ (ā§§.ā§­ āĻāϰ āĻ•āĻŽ)āĨ¤ āĻĻāĻžāϤāĻž āĻĒāϰāĻŽāĻžāϪ⧁āϰ āϞ⧋āύ āĻĒ⧇āϝāĻŧāĻžāϰ (āĻŽā§āĻ•ā§āϤāĻœā§‹ā§œ) āĻāĻŦāĻ‚ āĻ—ā§āϰāĻšā§€āϤāĻžāϰ āĻĢāĻžāρāĻ•āĻž āĻ…āϰāĻŦāĻŋāϟāĻžāϞ āĻĨāĻžāĻ•āϤ⧇ āĻšā§ŸāĨ¤ āĻļā§‚āĻ¨ā§āϝ āĻŦāĻž āĻĒā§āϰāĻžā§Ÿ āĻļā§‚āĻ¨ā§āϝ (āϏāĻŦ āϧāĻžāϤāĻŦ āĻĒāϰāĻŽāĻžāϪ⧁āϰ āχāϞ⧇āĻ•āĻŸā§āϰāύ āϟāĻžāύāĻžāϰ āĻ•ā§āώāĻŽāϤāĻž āϏāĻŽāĻžāύ āĻ“ āĻ•āĻŽ)āĨ¤
āĻŦāĻ¨ā§āϧāύ⧇āϰ āĻĻāĻŋāĻ•āϧāĻ°ā§āĻŽ (Directionality) āĻ…-āĻĻāĻŋāĻ•āĻŽā§āĻ–ā§€ (Non-directional); āφāĻ•āĻ°ā§āώāĻŖ āĻŦāϞ āϏāĻŦāĻĻāĻŋāϕ⧇ āϏāĻŽāĻžāύāĻ­āĻžāĻŦ⧇ āĻ›ā§œāĻžā§ŸāĨ¤ āϏ⧁āύāĻŋāĻ°ā§āĻĻāĻŋāĻˇā§āϟ āĻĻāĻŋāĻ•āĻŽā§āĻ–ā§€ (Directional); āĻĢāϞ⧇ āĻ…āϪ⧁āϗ⧁āϞ⧋āϰ āύāĻŋāĻ°ā§āĻĻāĻŋāĻˇā§āϟ āĻœā§āϝāĻžāĻŽāĻŋāϤāĻŋāĻ• āφāĻ•āĻžāϰ āĻĨāĻžāϕ⧇āĨ¤ āϏ⧁āύāĻŋāĻ°ā§āĻĻāĻŋāĻˇā§āϟ āĻĻāĻŋāĻ•āĻŽā§āĻ–ā§€; āĻ—āĻ āύ⧇āϰ āĻĒāϰ āĻāϟāĻŋ āϏāĻžāϧāĻžāϰāĻŖ āϏāĻŽāϝ⧋āĻœā§€ āĻŦāĻ¨ā§āϧāύ⧇āϰ āĻŽāϤ⧋āχ āφāϚāϰāĻŖ āĻ•āϰ⧇āĨ¤ āĻ…-āĻĻāĻŋāĻ•āĻŽā§āĻ–ā§€; āĻĒāϜāĻŋāϟāĻŋāĻ­ āĻ†ā§Ÿāύāϗ⧁āϞ⧋ āϚāĻžāϰāĻĒāĻžāĻļ⧇āϰ āχāϞ⧇āĻ•āĻŸā§āϰāύ āĻŽā§‡āĻ˜ā§‡āϰ āϏāĻžāĻĨ⧇ āϝ⧁āĻ•ā§āϤ āĻĨāĻžāϕ⧇āĨ¤
āϤāĻžāĻĒ āĻĒāϰāĻŋāĻŦāĻžāĻšāĻŋāϤāĻž āϖ⧁āĻŦāχ āĻ•āĻŽ (āĻ†ā§Ÿāύāϗ⧁āϞ⧋ āϕ⧇āϞāĻžāϏ⧇āϰ āĻŽāĻ§ā§āϝ⧇ āύāĻŋāĻ°ā§āĻĻāĻŋāĻˇā§āϟ āĻ¸ā§āĻĨāĻžāύ⧇ āĻ¸ā§āĻĨāĻŋāϰ āĻĨāĻžāϕ⧇)āĨ¤ āϖ⧁āĻŦāχ āĻ•āĻŽ (āĻŽā§āĻ•ā§āϤāĻ­āĻžāĻŦ⧇ āϤāĻžāĻĒ āϏāĻžā§āϚāĻžāϞāύ⧇āϰ āĻŽāĻžāĻ§ā§āϝāĻŽ āĻĨāĻžāϕ⧇ āύāĻž)āĨ¤ āϖ⧁āĻŦāχ āĻ•āĻŽāĨ¤ āĻ…āĻ¤ā§āϝāĻ¨ā§āϤ āĻŦ⧇āĻļāĻŋ (āĻŽā§āĻ•ā§āϤ āχāϞ⧇āĻ•āĻŸā§āϰāύāϗ⧁āϞ⧋ āĻĻā§āϰ⧁āϤ āϤāĻžāĻĒ āĻāĻ• āĻĒā§āϰāĻžāĻ¨ā§āϤ āĻĨ⧇āϕ⧇ āĻ…āĻ¨ā§āϝ āĻĒā§āϰāĻžāĻ¨ā§āϤ⧇ āύāĻŋā§Ÿā§‡ āϝāĻžā§Ÿ)āĨ¤
āωāĻĻā§āĻŦāĻžā§ŸāĻŋāϤāĻž āĻ“ āĻ—āĻ¨ā§āϧ āĻ…āύ⧁āĻĻā§āĻŦāĻžāϝāĻŧā§€ (Non-volatile) āĻāĻŦāĻ‚ āϏāĻŽā§āĻĒā§‚āĻ°ā§āĻŖ āĻ—āĻ¨ā§āϧāĻšā§€āύāĨ¤ āϏāĻžāϧāĻžāϰāĻŖāϤ āωāĻĻā§āĻŦāĻžāϝāĻŧā§€ āĻāĻŦāĻ‚ āĻ…āύ⧇āĻ• āϝ⧌āϗ⧇āϰāχ āϏ⧁āύāĻŋāĻ°ā§āĻĻāĻŋāĻˇā§āϟ āĻ—āĻ¨ā§āϧ āĻĨāĻžāϕ⧇āĨ¤ āϏāĻžāϧāĻžāϰāĻŖāϤ āωāĻĻā§āĻŦāĻžāϝāĻŧā§€ āĻāĻŦāĻ‚ āĻ—āĻ¨ā§āϧāϝ⧁āĻ•ā§āϤ āĻšāϤ⧇ āĻĒāĻžāϰ⧇āĨ¤ āĻ…āύ⧁āĻĻā§āĻŦāĻžāϝāĻŧā§€ āĻāĻŦāĻ‚ āĻ¸ā§āĻŦāĻžāĻ­āĻžāĻŦāĻŋāĻ• āϤāĻžāĻĒāĻŽāĻžāĻ¤ā§āϰāĻžā§Ÿ āϏāĻŽā§āĻĒā§‚āĻ°ā§āĻŖ āĻ—āĻ¨ā§āϧāĻšā§€āύāĨ¤
āĻŦāĻŋāĻ•ā§āϰāĻŋ⧟āĻžāϰ āĻ—āϤāĻŋ āĻ…āĻ¤ā§āϝāĻ¨ā§āϤ āĻĻā§āϰ⧁āϤ (āĻĻā§āϰāĻŦāϪ⧇ āĻ†ā§Ÿāύāϗ⧁āϞ⧋ āϕ⧇āĻŦāϞ āύāĻŋāĻœā§‡āĻĻ⧇āϰ āĻĒāĻžāĻ°ā§āϟāύāĻžāϰ āĻ…āĻĻāϞāĻŦāĻĻāϞ āĻ•āϰ⧇)āĨ¤ āϧ⧀āϰ āĻĨ⧇āϕ⧇ āĻŽāĻžāĻāĻžāϰāĻŋ (āĻĒ⧁āϰ⧋āύ⧋ āϏāĻŽāϝ⧋āĻœā§€ āĻŦāĻ¨ā§āϧāύ āĻ­āĻžāĻ™āϤ⧇ āĻāĻŦāĻ‚ āύāϤ⧁āύ āĻŦāĻ¨ā§āϧāύ āĻ—ā§œāϤ⧇ āϏāĻŽā§Ÿ āϞāĻžāϗ⧇)āĨ¤ āϧ⧀āϰ āĻĨ⧇āϕ⧇ āĻŽāĻžāĻāĻžāϰāĻŋ (āϏāĻŽāϝ⧋āĻœā§€ āĻŦāĻŋāĻ•ā§āϰāĻŋ⧟āĻžāϰ āĻŽāϤ⧋āχ)āĨ¤ āĻŦāĻŋāĻ•ā§āϰāĻŋ⧟āĻžāϰ āĻ—āϤāĻŋ āϧāĻžāϤ⧁āϰ āϏāĻ•ā§āϰāĻŋ⧟āϤāĻžāϰ āĻ“āĻĒāϰ āύāĻŋāĻ°ā§āĻ­āϰ āĻ•āϰ⧇; āϏāĻžāϧāĻžāϰāĻŖāϤ āĻŽāĻžāĻāĻžāϰāĻŋ āĻ—āϤāĻŋāϰāĨ¤
āωāĻĻāĻžāĻšāϰāĻŖ āĻ–āĻžāĻŦāĻžāϰ āϞāĻŦāĻŖ (\(NaCl\)), āĻŽā§āϝāĻžāĻ—āύ⧇āϏāĻŋ⧟āĻžāĻŽ āĻ…āĻ•ā§āϏāĻžāχāĻĄ (\(MgO\))āĨ¤ āĻĒāĻžāύāĻŋ (\(H_2O\)), āĻ•āĻžāĻ°ā§āĻŦāύ āĻĄāĻžāχāĻ…āĻ•ā§āϏāĻžāχāĻĄ (\(CO_2\))āĨ¤ āĻ…ā§āϝāĻžāĻŽā§‹āύāĻŋāϝāĻŧāĻžāĻŽ āφāϝāĻŧāύ (\(NH_4^+\)), āĻ•āĻžāĻ°ā§āĻŦāύ āĻŽāύ⧋āĻ•ā§āϏāĻžāχāĻĄ (\(CO\))āĨ¤ āϞ⧋āĻšāĻž (\(Fe\)), āϤāĻžāĻŽāĻž (\(Cu\)), āϏ⧋āύāĻž (\(Au\))āĨ¤

āĻŽāύ⧇ āϰāĻžāĻ–āĻžāϰ āϏāĻšāϜ āωāĻĒāĻžā§Ÿ:
* āφāϝāĻŧāύāĻŋāĻ•: āχāϞ⧇āĻ•āĻŸā§āϰāύ āĻĒ⧁āϰ⧋āĻĒ⧁āϰāĻŋ āĻšāĻžāϤāĻŦāĻĻāϞ āĻšā§Ÿ (āϝ⧇āĻŽāύ \(Na^+\) āĻ“ \(Cl^-\) āĻāϰ āĻ•ā§āϰāĻŋāĻ¸ā§āϟāĻžāϞ āĻ˛ā§āϝāĻžāϟāĻŋāϏ)āĨ¤
* āϏāĻŽāϝ⧋āĻœā§€: āχāϞ⧇āĻ•āĻŸā§āϰāύ āĻļā§‡ā§ŸāĻžāϰāĻŋāĻ‚ āĻĒāĻžāĻ°ā§āϟāύāĻžāϰāĻļāĻŋāĻĒ (āϝ⧇āĻŽāύ \(H_2O\) āĻ…āϪ⧁)āĨ¤
* āϏāĻ¨ā§āύāĻŋāĻŦ⧇āĻļ: āĻāĻ• āϤāϰāĻĢāĻž āĻ¸ā§āĻĒāĻ¨ā§āϏāϰāĻļāĻŋāĻĒ, āĻ•āĻŋāĻ¨ā§āϤ⧁ āĻ­ā§‹āĻ— āĻ•āϰ⧇ āĻĻ⧁āϜāύ⧇ āĻŽāĻŋāϞ⧇ (āϝ⧇āĻŽāύ \(NH_4^+\))āĨ¤
* āϧāĻžāϤāĻŦ: āχāϞ⧇āĻ•āĻŸā§āϰāύ āϏāĻŦāĻžāϰ āϜāĻ¨ā§āϝ āωāĻ¨ā§āĻŽā§āĻ•ā§āϤ, āϝ⧇āύ āĻāĻ•āϟāĻž āĻ•āĻŽāĻŋāωāύāĻŋāϟāĻŋ āĻĒā§āϰ⧋āĻĒāĻžāĻ°ā§āϟāĻŋ (āϝ⧇āĻŽāύ āϤāĻžāĻŽāĻžāϰ āϤāĻžāϰ āĻŦāĻž āϞ⧋āĻšāĻžāϰ āϰāĻĄ)āĨ¤

Comprehensive Comparison Table of Chemical Bonds

Property / Topic Ionic Bond Covalent Bond Coordinate Covalent Metallic Bond
Forming Mechanism Electrons are completely transferred from a metal to a non-metal, creating cations and anions. Pairs of electrons are shared equally between two non-metal atoms. The shared electron pair is contributed by only one atom (donor), while the other (acceptor) only shares it. Metal atoms release valence electrons to create a "sea of delocalized electrons" around positive metal ions.
Physical State (at Room Temp) Crystalline, geometric solids. Gases, liquids, or soft solids. Generally gases, liquids, or soft solids. Lustrous, shiny, and hard solids (except Mercury).
Melting & Boiling Points Very High (Requires massive energy to break strong electrostatic forces). Low to Moderate (Intermolecular forces between molecules are weak). Low to Moderate (Similar to standard covalent compounds). High to Very High (Strong attraction between metal ions and the electron sea).
Electrical Conductivity Insulator in solid state, but an excellent conductor when molten or dissolved in water. Insulator in all states (No free electrons or mobile ions). Insulator in all states. Excellent conductor in both solid and liquid states (due to highly mobile free electrons).
Physical Nature (Under Impact) Very hard but brittle; shatters or breaks into pieces when struck. Soft and flexible (except giant network covalent solids like diamond). Soft and flexible. Malleable and ductile; can be beaten into sheets or drawn into wires without breaking.
Electronegativity Difference (\(\Delta \chi\)) Very High (Typically greater than 1.7). Low to Moderate (Less than 1.7). Variable; requires a lone pair on the donor and an empty orbital on the acceptor. Zero or Near Zero (All metal atoms have an equally low pull on electrons).
Bond Directionality Non-directional; electrostatic attraction radiates uniformly in all directions. Highly Directional; shared electron pairs lock atoms into specific 3D molecular geometries. Highly Directional; behaves exactly like a regular covalent bond once formed. Non-directional; positive ions are uniformly attracted to the surrounding ambient electron sea.
Thermal Conductivity Very Low (Ions are locked tightly in place within the crystal lattice). Very Low (Lacks a continuous medium or free particles to transfer heat easily). Very Low. Extremely High (Delocalized electrons absorb heat and move rapidly to transfer it).
Volatility & Odor Non-volatile and completely odorless. Generally volatile; frequently exhibits distinct smells due to easy evaporation. Generally volatile; can exhibit distinct smells. Non-volatile and completely odorless under normal temperatures.
Reaction Kinetics Incredibly Fast (In solution, ions instantaneously exchange partners). Slow to Moderate (Existing covalent bonds must completely break before new ones form). Slow to Moderate (Follows molecular reaction pathways). Depends heavily on surface area and oxidation potential; generally intermediate speeds.
Examples Table Salt (\(NaCl\)), Magnesium Oxide (\(MgO\)). Water (\(H_2O\)), Carbon Dioxide (\(CO_2\)). Ammonium Ion (\(NH_4^+\)), Carbon Monoxide (\(CO\)). Iron (\(Fe\)), Copper (\(Cu\)), Gold (\(Au\)).

Easy Way to Remember:
* Ionic: A complete change of ownership of electrons (e.g., \(Na^+\) and \(Cl^-\) grid).
* Covalent: A mutual partnership where electrons are shared equally (e.g., \(H_2O\) molecule).
* Coordinate: A one-sided sponsorship where one atom provides the electrons but both enjoy the bond (e.g., \(NH_4^+\)).
* Metallic: A community property where electrons are free for all atoms to share (e.g., a copper wire or iron rod).