What is the chemical element selenium?

Question:

What is the chemical element selenium?

Discovery of Selenium:

Selenium was first discovered in 1817 by the Swedish chemist Jons Jacob Berzelius. Today, it is primarily used in pigments for ceramics and glass. It can give glass a red or brown tint.

Answer and Explanation: 1

The chemical element selenium is a reactive non-metal, meaning it is one of the non-metal elements found on Earth. Its chemical symbol is Se, and it has an atomic number of 34. Each chemical element has a unique symbol and atomic number. The atomic number is equal to the number of protons found in the nucleus of any atom of that element, regardless of the atom's isotope.


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Chalcogens (Group 6A Elements): Definition & Properties

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Chapter 7 / Lesson 7
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Learn about the chalcogen family of elements, their properties, chemical reactions, and uses.


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