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Electronic Structure: Number of Electrons definitions

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  • Atom
    Smallest unit of matter, consisting of a nucleus surrounded by shells where electrons are found.
  • Shell
    Region around a nucleus where electrons are likely to be found, each with a specific energy level.
  • Electron
    Negatively charged subatomic particle occupying shells around the nucleus.
  • Maximum Number
    Highest possible quantity of electrons that a shell can accommodate, determined by a mathematical formula.
  • 2n^2 Formula
    Mathematical expression used to calculate the greatest number of electrons a shell can hold, based on its number.
  • Shell Number
    Integer value (n) representing the position of a shell relative to the nucleus, starting from one.
  • First Shell
    Innermost energy level of an atom, capable of holding up to two electrons.
  • Second Shell
    Energy level immediately outside the first, able to contain up to eight electrons.
  • Energy Level
    Discrete distance from the nucleus where electrons reside, associated with a specific amount of energy.
  • Nucleus
    Central core of an atom, around which shells and electrons are arranged.
  • Subatomic Particle
    Component of an atom, such as an electron, that exists within or around the nucleus.
  • n Value
    Symbol representing the shell number in calculations for electron capacity.