How many valence electron Arsenic have?
How many valence electron Arsenic have?
Aniket Singh , 10 Months ago
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11 grade chemistry others> How many valence electron Arsenic have?...
1 AnswersAskiitians Tutor Team
Arsenic (As) is in Group 15 (also known as Group V A) of the periodic table. To determine the number of valence electrons in an element, we look at its group number for elements in groups 1, 2, and 13-18.
### Explanation:
- **Atomic number of arsenic (As)**: 33
- **Electron configuration**: The electron configuration of arsenic is \(1s^2 2s^2 2p^6 3s^2 3p^6 3d^{10} 4s^2 4p^3\).
The outermost shell is the 4th shell, and it contains:
- \(4s^2\) and \(4p^3\)
Thus, arsenic has **5 valence electrons** (2 from the 4s subshell and 3 from the 4p subshell).
### Conclusion:
Arsenic has **5 valence electrons**.
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