* Ionic Bonding: Sodium hydroxide is formed by the electrostatic attraction between a positively charged sodium ion (Na+) and a negatively charged hydroxide ion (OH-).
* Electron Transfer: Sodium loses its valence electron to become a cation (Na+), while oxygen in the hydroxide ion gains an electron to achieve a stable octet, forming a negatively charged hydroxide ion (OH-).
Therefore, instead of a Lewis dot structure, we represent the structure of NaOH as:
* Formula: NaOH
* Ionic Structure: Na+ OH-
Explanation:
* Sodium Ion (Na+): The sodium ion has lost its single valence electron and has a +1 charge. It's represented as simply Na+.
* Hydroxide Ion (OH-): The hydroxide ion has gained an electron, forming a covalent bond between oxygen and hydrogen. Oxygen has 6 valence electrons, and the added electron makes it 7. Hydrogen has 1 electron, and the bond uses 2 electrons. This leaves 6 electrons around oxygen, which is represented as 3 lone pairs, giving the hydroxide ion a -1 charge.
Important Note: While we can't draw a traditional Lewis dot structure, we can depict the individual ions separately, showing the transfer of electrons and the resulting charges.
