periodic table

(noun)

A tabular chart of the chemical elements according to their atomic numbers so that elements with similar properties are in the same column.

Related Terms

Examples of periodic table in the following topics:

  • The Periodic Table of Elements

    • The periodic table is a tabular display of the chemical elements.
    • Agroup, or family, is a vertical column in the periodic table.
    • A period is a horizontal row in the periodic table.
    • Here is the complete periodic table with atomic numbers, groups, and periods.
    • Explain how properties of elements vary within groups and across periods in the periodic table

  • The Periodic Table

    • The rows of the table are called periods.
    • Isotopes are never separated in the periodic table.
    • The standard form of the periodic table, where the colors represent different categories of elements
    • Mendeleev's 1869 periodic table presents the periods vertically and the groups horizontally.
    • Dmitri Mendeleev is known for publishing a widely recognized periodic table.

  • The Periodic Table

    • The periodic table is structured as an 18 X 7 grid, positioned above a smaller double row of elements.
    • In the typical periodic table, each element is listed by its element symbol and atomic number.
    • Each row of the periodic table is called a period and each column of the periodic table is called a group (or family).
    • The periodic table is a tabular display of all the chemical elements.
    • Identify the common periodic trends that can be deduced from the periodic table of elements

  • Atomic Size

    • Atomic radii generally decrease along each period (row) of the periodic table and increase down each group (column).
    • Atomic radii vary in a predictable manner across the periodic table.
    • Therefore, the size of atoms decreases as one moves across a period from left to right in the periodic table.
    • Therefore, atomic size, or radius, increases as one moves down a group in the periodic table.
    • The atomic size trends across a period and down a group ('family' in this figure) of the periodic table are shown in this figure.

  • Development of the Periodic Table

    • The periodic table is a methodical arrangement of the chemical elements, organized on the basis of their electron configurations.
    • It also established the mindset that gave us the periodic table of elements.
    • The modern version of Mendeleev's periodic table now contains some 118 different elements.
    • A modern representation of the periodic table showing organization by atomic number and valence.
    • The notation in the periodic table includes references to atomic mass and atomic number.

  • Periodic Table Position and Electron Configuration

    • Using periodic trends, the periodic table can help predict the properties of various elements and the relations between properties.
    • We will look at several visualizations of the periodic table.
    • The electron shell configurations of the first 18 elements in the periodic table.
    • Position in the periodic table based on electron shell configuration.
    • This image shows the entire periodic table, with diagrammatic atoms and electron shells filling with movement through the table.

  • The Bottom of the Periodic Table

    • The periodic table currently contains 7 periods, but theorists predict that two additional periods may exist.
    • The most classic representation of the periodic table shows the relative positions of the known elements in the table.
    • By using the predictive properties of the periodic table, along with a growing expertise in atomic and subatomic theory, two entirely new periods were predicted.
    • On the advice of Glenn Seaborg and others, Periods 8 and 9 were added to the periodic table, comprising the g-block.
    • The periodic table with all groups and periods in place.

  • Periods 1 through 3

    • The periodic table was constructed in order to organize those observations and measurements.
    • Electron are organized in energy levels or electron shells, which correspond to the periods on the periodic table.
    • The periodic table codifies the energy levels in periods, the rows on the table.
    • In the periodic table, there are 2 electrons in period 1, while both periods 2 and 3 have 8 electrons in the filled level.
    • Discuss the relationship between an atom's electron structure and its period (row) on the periodic table.

  • MLA: Tables and Figures

    • A table is a chart that presents numerical information in a grid format.
    • When you mention a table in the text of your paper, make sure you refer to it by its number (e.g., "table 4") rather than with a phrase like "the table below" or "this table."
    • Immediately below the table, write the word "Source" (or or "Sources"), followed by a colon, and then provide the source(s) of the information in the table.
    • Include the citation information, with the same formatting, as in a note in MLA style (i.e., formatted the same as a citation in your Works Cited section, except using commas instead of periods).
    • This source section should end with a period, and it should be formatted with a hanging indent (i.e., the first line should be flush with the left margin, and every subsequent line should be indented 0.5 inches).

  • Chicago/Turabian: Tables and Figures

    • A table is a chart that presents numerical information in a grid format.
    • When you mention a table in the text of your paper, make sure you refer to it by its number (e.g., "Table 1") rather than with a phrase like "the table below" or "this table."
    • Format your tables as simply as possible.
    • Every table should appear flush with the left margin.
    • End this line with a period: