Respuesta :
Oxygen atom in a water molecule is greedy for electrons, giving it a negative charge.
Because oxygen is more electronegative (electron-greedy) than hydrogen, it grabs electrons and keeps them away from the H atoms. This results in a partial negative charge on the oxygen end of the water molecule and a partial positive charge on the hydrogen end.
What is a molecule?
- A molecule can be homonuclear, that is, it consists of atoms of one chemical element, eg two atoms in an oxygen (O2) molecule; or it can be heteronuclear, a chemical compound composed of more than one element, eg water (two hydrogen atoms and one oxygen atom; H2O).
- In the kinetic theory of gasses, the term molecule is often used for gaseous particles. This relaxes the requirement that the molecule contain two or more atoms, since noble gasses are single atoms.
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