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Question
how does adding a double bond reduce the number of total electrons? instead of each atom sharing the electrons, each atom owns its own electrons, thus increasing the total number of electrons by 2. instead of each atom owning its own pair of electrons, the pair of electrons should be shared between the atoms, thus reducing the total number by 2 electrons.
En química, cuando se forma un enlace doble, dos átomos comparten dos pares de electrones. Si cada átomo tuviera su propio par de electrones (sin compartir), el total de electrones sería mayor. Al compartir un par de electrones (en el enlace doble), se evita contar dos veces ese par (uno para cada átomo). Entonces, en lugar de que cada átomo tenga su propio par (lo que sumaría 2 electrones adicionales), al compartir ese par, se reduce el total de electrones en 2.
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La segunda opción (Instead of each atom owning its own pair of electrons, the pair of electrons should be shared between the atoms, thus reducing the total number by 2 electrons) es la correcta.