List the three types of chemical bonds and explain the differences among them?
2 Answers
1:ionic bonding:It is done between metal and non metal.The metal loses and electron and gives it to the nonmetal.For example Na+ and Cl- so they make NaCl
2:Covalent Bonding:It is done between 2 non metals and they both share electrons for example H+ and OH- and they make H2O
3:Metallic Bonding:It is the strong attraction between closely packed positive metal ions and a 'sea' of delocalised electrons.An example is any metal like Zinc Iron etc
Covalents share electrons, ions give them and stick like magnets, and metals form a sea of electrons.
Explanation:
Chemical bonds are what stick atoms together. Atoms bond so that their outer shells are full of electrons and they become stable, like noble gases. Shells are what electrons organise themselves into around the nucleus - the inside shell can have 2 electrons, and after that they hold 8, excluding transition metals and really big atoms.
Covalent bonds are where two atoms share electrons. The orbitals that electrons sit in overlap between one atom and the next, which satisfies both of them and makes them stable. The two (exclusively non-metal) atoms then can't easily move away from each other - they are like blood brothers.
Ionic bonds are more like blood donations. A metal atom gives electrons to a non-metal atom. Electrons are negatively charged, which means the non-metal becomes more negative and the metal becomes more positive. Like North and South on a magnet, the two ions (charged atoms) then stick together.
Metallic bonds occur only in metals. The extra electrons in metal atoms are dropped, which makes the metal into a positive ion. The extra electrons become a sea of electrons, which is negative. Positive metals stick to negative electrons, and form a large metallic lattice structure. The free electrons are what conducts electricity through metals.
