Calculating Valence Electrons in Si 1cm3 Crystal

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To calculate the number of valence electrons in a 1cm³ crystal of silicon, one must first determine the density of silicon to find its mass. Silicon has four valence electrons per atom, but accurate calculations require converting the mass to moles using Avogadro's number. It's crucial to remember that 1cm³ equals 1cm x 1cm x 1cm, rather than simply multiplying dimensions. Using a periodic table can help verify calculations and avoid common mistakes. Proper attention to these details is essential for an accurate answer.
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Homework Statement




calculate how many valence electrons there are in a 1cm3 crystal of silicon?

Homework Equations





The Attempt at a Solution



the outer shell of si element has 4 electrons, i think this is my answer
 
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No I think you need to know the density of Si, and calculate mass. Convert mass in grams to avagadros number. Each atom has a valence shell.
 
every atom does have a valence shell but some are stable gases. careful with the numbers. try using a periodic table to ensure your answer and rmb 1cm3 is 1cm x 1cm x 1cm. don't just x3 it. many people make these mistakes
 
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