Selenide typically refers to the selenide ion, which is represented as \( Se^{2-} \). This ion is derived from the element selenium, which has an atomic number of 34.
For the Selenide Ion (\( Se^{2-} \)):
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Protons: The number of protons in selenium (the element) is 34, which corresponds to its atomic number.
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Neutrons: The most common isotope of selenium is \( \text{Se-78} \), which has 44 neutrons (78 - 34 = 44). However, selenium has multiple isotopes ranging from \( \text{Se-74} \) (40 neutrons) to \( \text{Se-82} \) (48 neutrons), so the number of neutrons can vary depending on the specific isotope.
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Electrons: In the selenide ion (\( Se^{2-} \)), selenium has gained 2 additional electrons. Therefore, the total number of electrons in the selenide ion is:
- 34 (protons) + 2 (extra electrons) = 36 electrons.
Summary for the Selenide Ion (\( Se^{2-} \)):
- Protons: 34
- Neutrons: Usually 44 (for most common isotope \( \text{Se-78} \)), but can vary.
- Electrons: 36
If you need information on specific isotopes or any other details, feel free to ask!