Solution Found!
Electrons in outer shell of: Potassium, Calcium, Aluminum
Chapter 1, Problem 1.1(choose chapter or problem)
How many electrons does each of the following elements have in its outermost electron shell?
(a) Potassium
(b) Calcium
(c) Aluminum
Questions & Answers
QUESTION:
How many electrons does each of the following elements have in its outermost electron shell?
(a) Potassium
(b) Calcium
(c) Aluminum
ANSWER:Step 1 of 4
(a) Potassium (K):
Group:\(1\)
Atomic number:\(19\)
Electron configuration:\({\rm{1}}{{\rm{s}}^{\rm{2}}}{\rm{2}}{{\rm{s}}^{\rm{2}}}{\rm{2}}{{\rm{p}}^{\rm{6}}}{\rm{3}}{{\rm{s}}^{\rm{2}}}{\rm{3}}{{\rm{p}}^{\rm{6}}}{\rm{4}}{{\rm{s}}^{\rm{1}}}\)
In its ground state, potassium holds one electron in the \(4s\) (outermost) orbital.
Hence this atom has one electron in its outermost shell.
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Electrons in outer shell of: Potassium, Calcium, Aluminum
Want To Learn More? To watch the entire video and ALL of the videos in the series:
This video explains the importance of the number of valence electrons in an element's chemical behavior and demonstrates how to determine the valence electrons for potassium, calcium, and aluminum based on their positions in the periodic table. Valence electrons dictate an element's reactivity with other elements, making this knowledge essential for understanding chemical reactions.