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How many valence electrons does an atom of aluminum (Al) possess?
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10. Periodic Properties of the Elements
Valence Electrons of Elements
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How many valence electrons does a fluorine atom have?
A
6
B
7
C
5
D
8
Guida verificata passo dopo passo1
Identify the element in question, which is fluorine (F).
Recall that the number of valence electrons corresponds to the electrons in the outermost shell of an atom.
Determine the electron configuration of fluorine: \$1s^2 2s^2 2p^5$.
Focus on the electrons in the second shell (the outermost shell for fluorine), which includes the \$2s$ and \$2p$ orbitals.
Count the electrons in the \$2s$ and \$2p$ orbitals: \(2\) electrons in \$2s$ plus \(5\) electrons in \$2p$, totaling \(7\) valence electrons.
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