15 Questions
What is the electron configuration of Sodium?
(2,8,1)
What are valence electrons?
Electrons in the outermost shell
Why does the 4s subshell have lower energy than the 3d subshell?
Due to shielding and penetration effects
How many electrons can the 4s subshell hold?
2
What does the electron configuration (2,8,8,2) represent?
The electron configuration of Calcium
What is the charge of protons?
Positive
What is the charge of electrons?
Negative
What is the charge of neutrons?
Neutral
What is the term for charged atoms that have lost or gained electrons?
Ions
What are positive ions called?
Cations
What are negative ions called?
Anions
What is the term for atoms of an element that have a different number of neutrons?
Isotopes
What is the atomic number defined as?
Number of protons
What is the mass number defined as?
Number of protons + number of neutrons
How can we calculate the electron configuration of an atom or ion?
By assigning electrons to energy levels or shells based on a specific procedure
Test your understanding of ions, including the differences between protons, electrons, and neutrons, as well as the concept of cations and anions. Learn how ions are formed by gaining or losing electrons.
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