Multiple Choice
How many valence electrons does an oxygen atom have?
5
views
9. Electrons in Atoms and the Periodic Table
Valence Electrons of Elements (Simplified)
Struggling with Introduction to Chemistry?
Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
In introductory chemistry, what is a valence electron?
A
An electron in a completely filled inner shell that never affects chemical properties.
B
A positively charged particle in the atom that balances the charge of neutrons.
C
Any electron located in the nucleus that determines the element’s identity.
D
An electron in the outermost occupied energy level (shell) of an atom that can participate in bonding.
Verified step by step guidance1
Understand that valence electrons are the electrons located in the outermost energy level (shell) of an atom. These electrons are important because they are involved in chemical bonding and reactions.
Recall that inner shell electrons, also called core electrons, are those in completely filled inner shells and generally do not participate in bonding or affect chemical properties.
Recognize that protons are positively charged particles found in the nucleus, and they balance the charge of electrons, not neutrons. Neutrons are neutral particles in the nucleus and do not affect charge balance.
Note that electrons are not located in the nucleus; instead, they orbit the nucleus in energy levels or shells. The identity of an element is determined by the number of protons, not electrons.
Therefore, the correct definition of a valence electron is an electron in the outermost occupied energy level (shell) of an atom that can participate in bonding.
1:55mWatch next
Master Valence Electrons of Elements (Simplified) Concept 1 with a bite sized video explanation from Jules
Start learningRelated Videos
Related Practice
Valence Electrons of Elements (Simplified) practice set
Problem sets built by lead tutorsExpert video explanations