QQuestionChemistry
QuestionChemistry
A neutral atom of Fluorine has seven valence electrons. How many valence electrons are present in the ion F⁻¹?
○ A. 1
○ B. 2
○ C. 7
○ D. 8
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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:: Understand the Initial State of a Neutral Fluorine Atom
A neutral fluorine atom has $$7$$ valence electrons.
This is a key characteristic of fluorine in its neutral state.
Step 3:: Analyze the Ion Formation
When fluorine forms an ion with a $$-1$$ charge (F⁻), it gains one additional electron.
Step 4:: Calculate the Number of Valence Electrons in F⁻
7 + 1 = 8$$ valence electrons
Step 5:: Reasoning
- This brings the total number of valence electrons to $$8
- The - 1 charge indicates the atom has gained one electron
Final Answer
Key Concept: When a neutral atom gains electrons to become a negative ion, the number of valence electrons increases by the magnitude of the charge.
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