In chemistry, a covalent bond is a chemical bond in which the outer shell electrons of the constituent atoms are shared between them when the molecule is formed. One example of a common molecule that has covale
Why does the carbon atom play such a central role in the chemistry of life and what is so special about it? First of all, the compounds possible when carbon is their chief structural component are incredibly diverse. As we see in Section 1.6, the carbon atom can form four covalent bonds...
Why are covalent bonds directional while ionic bonds are not? Why are covalent bonds between hydrogen and nitrogen or oxygen polar? Both CO2 and SiO2 exhibit covalent bonding, so why is CO2 not a covalent-network solid? If a covalent bond only occurs within a molecule, then why does it occ...
Explain how the electrical conductivity of a crystal is affected by the Schottky and Frenkel defect. Explain why the compound YBa_2Cu_3O_7 is black and a super conductor, but YBa_2Cu_3O_5 is green and an insulator. Why is copper (II) sulfate solution a good ...
Why is water tetrahedral? Both CO2 and SiO2 exhibit covalent bonding, so why is CO2 not a covalent-network solid? How are ionic bonds and Van der Waals forces different? Why do ions form covalent bonds (polyatomic ions) if they already have complete valence shells due to their ionizing? Wh...
1) What is the strongest metal? 2) The strongest alloy? 3) Which salt has the highest vaporization point? 4) Which covalent molecule has the highest vaporization point? 5) What is the most polar molecule? (It is not HF, Hydrofluoric acid.) Consider ...
In terms of electrons, why is the bonding in NaCl ionic?Classify the bonding as ionic or covalent and explain why? a) HI b) NaIWhy does oxygen always form 2 bonds and not form 1 bond or 3 bonds?In terms of structure and/or bond types, explain ...
Explain why methane is a gas and diamond is a solid at room temperature. Identify and explain the type(s) of intermolecular bonds between molecules of NH3. Which intermolecular force explains why water is a liquid at room temperature? a) hydrogen bondi...
Is amorphous glass (SiO2) a good conductor? Why or why not? Why do metals feel cold even when they are at room temperature? Why do materials such as copper, silver, or tin tend to get hot very quickly when heated? Why metals cannot be charged by...