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Types of Bonds CHEM
| Term | Definition |
|---|---|
| Ionic Bonding - process of dissolving in water and how it explains conductivity and solubility. | Solid, high melting point, conductive only if dissolved, and high solubility in water - held together by electrostatic forces that are in many directions which allows lattice formation and can only vibrate when solid so cannot conduct. |
| Covalent (includes polar and non-polar) - everything depends on polarity. | Any state of matter at room temp, depends on the compound. Not conductive, but solubility depends on the compound and true for all states of matter for each compound - since covalent compounds share, they are neutral and there are no free electrons t |
| Metallic bonds | It is solid at room temperature, conductive, but not soluble at room temperature - electrostatic force is strong but electrons are not bound to any atom and delocalized and move freely allowing them to conduct (lattice),. H2O cannot break electron. |
| Polar, non-polar, and ionic classifications and bonding triangle. | NP=0.0-0.4, P=0.5-1.7, I=1.7+, since the numbers are a spectrum, the bonding triangle aids in providing boundaries. X axis -s avg en, while y is en difference. |
| Polar and non polar bonds versus polar and non-polar : watch out for induced dipoles | Polarity of a bond is about atoms sharing electrons equally while polarity of a molecule is about the overall shape of the entire molecule. Bond dipole versus net dipole movement of the whole thing, keep in mind: all polar = nonpolar but not vice versa |
| induced dipole | Even though the molecules have non-polar bonds and a net dipole of zero, they possess polarizable electron clouds that form temporary, induced dipoles, allowing them to attract each other and condense into a liquid or solid. |
| Potential energy graphs | X is the inter nuclear distance , while the y is the potential energy. Internuclear distance decreases as more electrons are involved so triple bond, double, single, etc. |
| How to interpret the potential energy and dips of the graphs | When is near the dotted line,/0 : the electrons show no chemical relationship and moving past. Less than 0: stability because energy is released. Minimum: strength of bond energy, greater than 0: forced close together and repel. |
| Bond Length | Exact distance where the pulling forces and pushing forces perfectly balance each other out. Atomic radii: As larger atoms have longer bond lengths, smaller has shorter. , and bond order increases, length decreases, |
| Sigma Bonds and pi | First covalent bond formed between any atoms pi comes after double and triple; there is only sigma bond. |