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 covalently bonded atoms is water....
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...
Elements in the same group (column) of the periodic table tend to exhibit similar chemical properties, so silicon, too, can form four covalent bonds, giving it the same potential for diversity as carbon. 如果碳的表现如此之好,那么为硅(在元素周期表中,硅就在碳的下方)就不行呢?元素周期表中同...
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 ...
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...