QQuestionChemistry
QuestionChemistry
How many valence electrons does krypton have?
A) 6
B) 8
C) 10
D) 18
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Answer
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Step 1:I'll solve this step-by-step following the LaTeX formatting guidelines:
Step 2:: Determine Krypton's Position on the Periodic Table
- Krypton is a noble gas located in Group 18 (noble gas group) - Its atomic number is 36 - It is in Period 4 of the periodic table
Step 3:: Electron Configuration
- The electron configuration of krypton is $$1s^{2} 2s^{2} 2p^{6} 3s^{2} 3p^{6} 4s^{2} 3d^{10} 4p^{6}
Step 4:: Count Valence Electrons
- The 4s orbital contains $$4s^{2}$$ which are 2 more electrons
- For noble gases, valence electrons are the electrons in the outermost shell - In this case, the outermost electrons are in the 4p orbital
Step 5:: Total Valence Electrons
- Total valence electrons = $$6 + 2 = 8$$ electrons
Final Answer
B) 8 valence electrons
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