Atomic Structure & Periodicity
9 terms
p-Block Elements
The elements of groups 13 to 18, in which the outermost electrons progressively fill p orbitals.
Atomic Structure & PeriodicityParamagnetism
Weak attraction into a magnetic field, shown by substances containing one or more unpaired electrons.
Atomic Structure & PeriodicityPauli Exclusion Principle
The rule that no two electrons in an atom may have the same set of all four quantum numbers.
Atomic Structure & PeriodicityPeriod
A horizontal row of the periodic table, corresponding to one principal quantum number of the valence shell.
Atomic Structure & PeriodicityPeriodic Law
The principle that the properties of the elements are periodic functions of their atomic numbers.
Atomic Structure & PeriodicityPeriodic Table
The tabular arrangement of the chemical elements by increasing atomic number, grouping those with similar properties in vertical columns.
Atomic Structure & PeriodicityPlum Pudding Model
J. J. Thomson's 1904 model picturing the atom as a sphere of diffuse positive charge with electrons embedded within it.
Atomic Structure & PeriodicityPrincipal Quantum Number
The quantum number n that specifies the main energy level and average distance of an electron from the nucleus.
Atomic Structure & PeriodicityProton
A positively charged subatomic particle found in the atomic nucleus, carrying a charge of +1 elementary unit.