QQuestionChemistry
QuestionChemistry
The elements in group 17 of the periodic table are all called halogens. All halogens have the same ______.
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Answer
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Step 1:I'll solve this problem step by step, following the specified LaTeX formatting guidelines:
Step 2:: Identify the Characteristic of Halogens
Halogens are a group of elements located in Group 17 (formerly Group VIIA) of the periodic table. To determine their common characteristic, we need to examine their electron configuration.
Step 3:: Analyze Electron Configuration
- This means their electron configuration ends with $$ns^{2}np^{5}$$, where n is the principal quantum number
Halogens have a unique electron configuration in their outer shell: - They all have 7 valence electrons in their outermost energy level
Step 4:: Understand the Significance of 7 Valence Electrons
Having 7 valence electrons means halogens are: - One electron short of a full outer shell (which would be 8 electrons) - Highly reactive, seeking to gain one electron to achieve a stable electron configuration - Capable of forming - 1 ions by gaining an electron
Final Answer
All halogens have the same number of valence electrons (7) in their outer shell.
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