Oxygen, with an atomic number of 8, has an electron configuration of 1s² 2s² 2p⁴, placing six electrons in its outermost shell. The central oxygen atom forms two covalent bonds with hydrogen atoms, sharing one electron from each hydrogen.
How Valence Electrons Define Water Reactivity
Connection to Chemical Reactivity The valence electron configuration also explains water's behavior in chemical reactions. As a reactant, water can act as a nucleophile, using its lone pairs to attack electron-deficient atoms.
This arrangement results in a bent molecular shape with a bond angle of approximately 104. Oxygen contributes six valence electrons, and each hydrogen atom contributes one.
How Valence Electrons Define Water Reactivity
These eight electrons are distributed across the molecule to satisfy the octet rule for oxygen and the duet rule for hydrogen. It can also participate in acid-base reactions, where it donates a proton (H+) to act as an acid or accepts a proton to act as a base.
More About Number of valence electrons in h2o
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More perspective on Number of valence electrons in h2o can make the topic easier to follow by connecting earlier points with a few simple takeaways.