Multiple Choice
How many electrons are present in the outermost energy level (valence shell) of a neutral potassium (K) atom?
4
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 an atom of nitrogen have?
A
2
B
5
C
7
D
3
Verified step by step guidance1
Identify the element in question, which is nitrogen (N).
Recall that the number of valence electrons corresponds to the electrons in the outermost shell of an atom.
Determine the electron configuration of nitrogen: $1s^2 2s^2 2p^3$.
Focus on the electrons in the second shell (the outermost shell for nitrogen), which includes the $2s$ and $2p$ orbitals.
Count the electrons in the $2s$ and $2p$ orbitals: $2 + 3 = 5$ 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