Chemistry High School

add electron dots and charges as necessary to show the reaction of calcium and oxygen

Answers

Answer 1

The reaction between calcium and oxygen can be represented by the formation of calcium oxide (CaO), where calcium loses two electrons and oxygen gains two electrons to achieve stability.

Calcium has an atomic number of 20 and its electron configuration is 2, 8, 8, 2. Oxygen has an atomic number of 8 and its electron configuration is 2, 6. To achieve a stable electron configuration, calcium tends to lose two electrons, resulting in a 2+ charge (Ca2+). Oxygen tends to gain two electrons, resulting in a 2- charge (O2-). In the reaction between calcium and oxygen, each calcium atom will lose two electrons to form Ca2+ ions, and each oxygen atom will gain two electrons to form O2- ions. The resulting ions will combine to form calcium oxide (CaO), with the charges balancing out. The electron-dot structure can be represented as Ca(2+) + O(2-) → CaO.

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