Multiple Choice
How many valence electrons does an oxygen (O) atom have?
1
views
10. Periodic Properties of the Elements
Valence Electrons of Elements
Struggling with General Chemistry?
Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
How many valence electrons does a fluorine atom have?
A
7
B
5
C
6
D
8
Verified step by step guidance1
Identify the element in question, which is fluorine (F).
Determine the atomic number of fluorine, which is 9, meaning it has 9 electrons in total.
Recall that valence electrons are the electrons in the outermost shell of an atom.
Write the electron configuration of fluorine: $1s^2 2s^2 2p^5$.
Count the electrons in the outermost shell (the second shell), which includes the $2s^2$ and $2p^5$ electrons, totaling 7 valence electrons.
2:32mWatch next
Master Main Group Elements Valence Electrons with a bite sized video explanation from Jules
Start learningRelated Videos
Related Practice
Valence Electrons of Elements practice set
Problem sets built by lead tutorsExpert video explanations