Se

Selenium

Chemical Element
Atomic number: 34 Atomic mass: 78.96 u Type: Polyatomic nonmetal
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  1. Selenium is a project that provides tools for automating web applications and browser tasks, such as testing, debugging, and administration. Learn how to use Selenium WebDriver, IDE, Grid, and Level to create robust and scalable automation suites and scripts.
    • Downloads

      In order to create scripts that interact with the Selenium Server (Remote WebDriver) or create local Selenium WebDriver scripts, you need to make use of language-specific client drivers. While language bindings for other languages exist, these are the core ones that are supported by the main project hosted on GitHub. C#.

    • Selenium Ide

      Selenium IDE can be extended through the use of plugins. They can introduce new commands to the IDE or integrate with a third-party service. Write your own or install one that someone else has already written. Try it out. Download Selenium IDE for either Chrome or Firefox and get started.

    • Sponsors

      The following companies have sponsored the Selenium project. We thank each and every one of them for their generous support. Selenium Level Sponsors. Gold Level Sponsors. Silver Level Sponsors. Bronze Level Sponsors. Sponsoring. Would you like your company to be listed on this page?

    • About

      The Selenium project is a member of the Software Freedom Conservancy, a 501(c)3 non-profit organization. The Conservancy has reduced the management overhead associated with creating our own, dedicated legal entity. The majority of sponsorship funds go directly towards supporting the Selenium project, such as server, software and conference ...

    • Documentation

      Selenium Manager (Beta) Selenium Manager is a command-line tool implemented in Rust that provides automated driver and browser management for Selenium. Selenium bindings use this tool by default, so you do not need to download it or add anything to your code or do anything else to use it.

    • Projects

      Selenium has many projects that combine to form a versatile testing system. Selenium WebDriver. Selenium WebDriver drives a browser natively, as a real user would, either locally or on remote machines. Simple and concise. WebDriver is simple, it is designed as a concise and compact programming interface.

  2. Selenium is a chemical element; it has symbol Se and atomic number 34. It is a nonmetal (more rarely considered a metalloid) with properties that are intermediate between the elements above and below in the periodic table, sulfur and tellurium, and also has similarities to arsenic.
  1. Selenium

    Chemical element with symbol Se and atomic number 34

    Selenium is a chemical element; it has symbol Se and atomic number 34. It is a nonmetal with properties that are intermediate between the elements above and below in the periodic table, sulfur and tellurium, and also has similarities to arsenic. It seldom occurs in its elemental state or as pure ore compounds in Earth's crust. Selenium was discovered in 1817 by Jöns Jacob Berzelius, who noted the similarity of the new element to the previously discovered tellurium. Selenium is found in metal sulfide ores, where it partially replaces the sulfur. Commercially, selenium is produced as a byproduct in the refining of these ores, most often during production. Minerals that are pure selenide or selenate compounds are known but rare. The chief commercial uses for selenium today are glassmaking and pigments. Selenium is a semiconductor and is used in photocells. Applications in electronics, once important, have been mostly replaced with silicon semiconductor devices. Wikipedia

    Name, symbol selenium, Se
    Pronunciation -nee-əm]]
    Appearance black, red, and gray (not pictured) allotropes