Elements

Elements are the smallest units of matter that can’t be divided using chemical means. They are the building blocks of matter. Learn the names of the elements and get facts about them.

Here are examples of metals, metalloids, and nonmetals on the periodic table. — Most elements of the periodic table are metals, some are nonmetals, and a few have properties of both metals and nonmetals, so they are called metalloids. Here are five examples of metals, metalloids, and nonmetals on the periodic table. Also, there are examples of substances that are not elements and […]

5 Examples of Metals, Metalloids, and Nonmetals

This entry was posted on June 21, 2020 by Anne Helmenstine (updated on June 21, 2020)

Simple Periodic Table with Element Symbols — Only the letters J and Q are not found on the periodic table.

What Letter Is not on the Periodic Table?

This entry was posted on June 14, 2020 by Anne Helmenstine (updated on June 14, 2020)

Xenon vapor emits a characteristic blue glow in a discharge lamp. — Xenon is the element with atomic number 54 and symbol Xe.

Xenon Facts and Uses – Atomic Number 54 Element Symbol ...

This entry was posted on May 22, 2020 by Anne Helmenstine (updated on May 23, 2020)

Here are the names, element symbols, and atomic numbers of the first 20 elements of the periodic table. — It’s handy to know the first 20 elements of the periodic table. Around 99% of the mass of the human body is made of six of these elements. The first 20 elements are also a good overview of the different element groups. The elements are listed in order of increasing […]

First 20 Elements of the Periodic Table

This entry was posted on February 26, 2020 by Anne Helmenstine (updated on April 20, 2020)

Tabela Periódica Portuguesa — This table is a list of the elements in English and Portuguese arranged by atomic number.

List of Elements in Portuguese

This entry was posted on October 28, 2019 by Todd Helmenstine (updated on October 28, 2019)

Periodic Table of Radioactive Elements — Technetium is a radioactive element, with no stable isotopes. With an atomic number of 43, it is the lightest unstable element. All of the elements surrounding it on the periodic table have at least one stable isotope. What is it about technetium that makes it special? The short answer is […]

Why Is Technetium Radioactive?

This entry was posted on September 12, 2019 by Anne Helmenstine (updated on November 1, 2019)