give examples of molecules?
polar covalent bond
covalent bond
hydrogen bonding
nonpolar
intermolecular
intra molecular
Answers
A water molecule, abbreviated as H2O, is an example of a polar covalent bond. The electrons are unequally shared, with the oxygen atom spending more time with electrons than the hydrogen atoms. Since electrons spend more time with the oxygen atom, it carries a partial negative charge.
Such covalent substances are usually gases, for example, HCl, SO2, CO2, and CH4. In molecular structures, there are weak forces of attraction. Such covalent substances are low-boiling-temperature liquids (such as ethanol), and low-melting-temperature solids (such as iodine and solid CO2).
water (H2O): Water is an excellent example of hydrogen bonding. The bond is between the hydrogen of one water molecule and the oxygen atoms of another water molecule, not between the two hydrogen atoms (a common misconception). ... ammonia (NH3): Hydrogen bonds form between hydrogen of one molecule and nitrogen of another.
A nonpolar molecule has no separation of charge, so no positive or negative poles are formed. In other words, the electrical charges of nonpolar molecules are evenly distributed across the molecule. ... Polar molecules tend to dissolve well in water and other polar solvents.
Examples of polar molecules include hydrogen chloride (HCl) and chloroform (CHCl3). Often molecules contain dipolar groups of atoms, but have no overall dipole moment on the molecule as a whole.
The force that holds together the atoms making up a molecule or compound. Examples of intramolecular forces are chemical bonds such as ionic, covalent and metallic bonds. Compare: intermolecular force.