QQuestionChemistry
QuestionChemistry
How many valence electrons does Ne have, and why is it considered stable?
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Answer
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Step 1:: Understand the problem
We need to determine the number of valence electrons in a Neon (Ne) atom and explain why it is considered stable.
Step 2:: Find the atomic number of Neon
Neon is element number 10 on the periodic table, so its atomic number is 10.
Step 3:: Recall the definition of valence electrons
Valence electrons are the outermost electrons in an atom that can participate in the formation of chemical bonds with other atoms.
Step 4:: Identify the valence electrons in Neon
Since atomic number 10 corresponds to Neon, it has 10 electrons orbiting its nucleus. The first two electrons fill the 1s orbital, the next two electrons fill the 2s orbital, and the remaining six electrons occupy the 2p orbital. These last six electrons in the 2p orbital are the valence electrons.
Step 5:: Explain Neon's stability
Neon is considered a stable noble gas because its outermost shell (the n= 2 shell in this case) is completely filled with electrons. This electron configuration, with a full outer shell, is particularly stable and results in Neon having little to no tendency to gain or lose electrons, making it chemically inert.
Final Answer
Neon (Ne) has 6 valence electrons, and it is considered stable because its outermost electron shell is completely filled, resulting in a stable electron configuration.
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