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Fluorine is a highly reactive, pale yellow gas at room temperature. It is commonly found in the crust of the Earth (it is the 13th most common element) as a part of certain minerals, such as fluorite. It is a chemical element with the atomic number 9 and represented by the chemical symbol F. Fluorine is one of only 26 chemical elements that only have one stable isotope (these are known as monoisotopic elements). However, many other isotopes of fluorine have been identified.
Nitrogen is a colorless and odorless gas at room temperature and a chemical element represented by the symbol N and atomic number 7. It makes up the largest volume of the air (about 78.1%) on Earth and is an essential building block of amino acids and nucleic acids (DNA and RNA). This means that nitrogen is essential to life! There are two stable isotopes of nitrogen and both are found naturally on Earth. However, there are a number of other isotopes of nitrogen that have been discovered. Let’s find out how many isotopes nitrogen have been identified.
Beryllium is a lightweight, strong and brittle white-gray metal. It is a chemical element represented by the atomic number 4 and the symbol Be. It is never found in free form on the planet, but is found combined with other elements in various minerals. Isotopes of beryllium are created in stars and are short lived, which means that it is a relatively rare element on Earth and in the Universe. Beryllium is a monoisotopic element, which means that it is one of the 26 elements with only one stable isotope. However, there are a number of other isotopes of beryllium that has been found. Let’s find out how many isotopes of beryllium have been identified.
Lithium is a element represented by the chemical symbol Li and the atomic number 3. It is highly reactive, which means that it is never found naturally in its free form. However, it is found in many compounds and is the 25th most abundant element in the crust of the Earth. It is also found in trace amounts in many organisms, including humans, and it is considered to be an essential trace element. There are two stable isotopes of lithium and all naturally occurring lithium is composed of these isotopes. Let’s find out how many isotopes of lithium have been identified.
Helium is a colorless, odorless, tasteless, chemical element that exists as a nobel gas in all but extreme conditions. It is the second lightest element in the universe and also the second most common. However, it is relatively rare on Earth as our atmosphere contains only 0.00052% of the gas. There are only two stable isotopes of helium and the majority of helium on Earth is the more common of the two! Let’s find out how many isotopes of helium have been identified.
Boron is the 5th element on the periodic table where it is represented by the chemical symbol B. Although compounds containing boron had been known for many centuries, the element wasn’t discovered until 1808 by British chemist Sir Humphry Davy. The metal is never found naturally in its free form on Earth, but is found combined with other elements in certain compounds. All boron found on Earth is comprised of one of two isotopes, but a number of other isotopes have also been identified.
Nickel is a chemical element with the chemical symbol Ni and atomic number 28. It has been used for many years, but wasn’t identified until 1751 when Swedish chemist Axel Fredrik Cronstedt isolated it for the first time. It is a silvery-white metal that almost never occurs in natural form because it is reactive with oxygen. However, nickel is commonly found in minerals that contain sulfur, iron and arsenic. All of the naturally occurring nickel is made up of one of 5 stable isotopes, although many other isotopes of this metal have been identified.
Oxygen is one of the best known chemical elements on Earth. On the periodic table it is represented by the chemical symbol O and by the atomic number 8. Oxygen is an important part of the air that we breathe and the water we drink, which are both essential to human life. It is one of the most abundant elements on Earth and is the third most abundant element in the universe. Approximately 99.76% of the oxygen found on Earth is made up of one isotope, but many other isotopes have also been discovered.
Magnesium is a chemical element with the atomic number 12 and the chemical symbol Mg. It is a highly reactive silvery-white metal. It has many important uses and is an essential mineral nutrient for healthy plants and animals. Magnesium is the fourth most abundant element on Earth and all of this naturally occurring magnesium is made up of 3 stable isotopes. However, many other isotopes of magnesium have also been discovered.
Sodium is the 11th element on the periodic table where it is represented by the symbol Na. It is a soft metal, with a silvery-white appearance and it is highly reactive. It is the 6th most abundant element in the crust of the Earth. All of the natural sodium on the planet is made up of 23Na, which is the only stable isotope of sodium. This means that sodium is a monoisotopic element (element with only 1 stable isotope). However, sodium has many other isotopes that have been discovered.