QQuestionChemistry
QuestionChemistry
What element has the electron configuration of 1s^22s^22p^63s^23p^5?
A. Chlorine
B. Sulfur
C. Aluminum
D. Neon
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Answer
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Step 1:Let's solve this step by step:
Step 2:: Analyze the Electron Configuration
The given electron configuration is $$1s^{2}2s^{2}2p^{6}3s^{2}3p^{5}
Step 3:: Count the Total Number of Electrons
Total electrons = $$2 + 2 + 6 + 2 + 5 = 17$$ electrons
- 1s²: 2 electrons - 2s²: 2 electrons - 2p⁶: 6 electrons - 3s²: 2 electrons - 3p⁵: 5 electrons
Step 4:: Identify the Element with 17 Electrons
The element with 17 electrons is Chlorine (Cl), which is located in: - Period 3 - Group 17 (Halogen group) - Atomic number 17
Step 5:: Verify the Electron Configuration
Chlorine's electron configuration matches the given configuration exactly.
Final Answer
Chlorine Explanation: The electron configuration 1s^{2}2s^{2}2p^{6}3s^{2}3p^{5} uniquely identifies Chlorine, which has 17 electrons and is located in Period 3, Group 17 of the periodic table.
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