Atom structure — main components?
Protons, neutrons, electrons.
Protons — location?
In the nucleus.
Neutrons — charge?
Neutral (no charge).
Electrons — orbit?
In shells around nucleus.
Electron shells — pattern?
2,8,8... electrons.
Periodic table — layout?
Rows (periods) and columns (groups).
Group properties — shared?
Same outer electrons, similar reactivity.
Period properties — determined by?
Number of electron shells.
Metals — location?
Left and middle of table.
Non-metals — location?
Right side of table.
Nuclear mass — main contributors?
Protons and neutrons.
Mass number — equals?
Protons plus neutrons.
Neutrons — calculation?
Mass number minus atomic number.
Particle charges — protons?
Positive (+).
Particle charges — electrons?
Negative (-).
Particle charges — neutrons?
Neutral (0).
Atomic number — defines?
Element identity.
Outer electrons — influence?
Chemical properties and group.
Test your knowledge with 9 questions on Fundamentals of Atomic Structure.
1. In practical electrical wiring, which type of element is preferred and why?
2. What is the electric charge of a proton?
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