The relative atomic mass of radon
is indeterminiate because this element is relatively short lived and exists only as a transient decay product.
The element with an atomic mass of 222 amu is radon (Rn).
To type the chemical symbol for Radon with its mass and atomic number on a computer, you can use the following format: ^222Rn. This notation indicates that Radon has an atomic number of 86 and a mass number of 222.
222 Amu (atomic mass units) Each isotope of radon has a different atomic mass; see the link. The density of radon is 9,73 g/L.
Atomic mass increases from top to bottom and left to right on the periodic table. In each row, the noble gasses have the highest atomic mass. As you travel down that column, also called a group or family, the noble gasses increase in atomic mass. The naturally occurring noble gas with the highest atomic mass is Radon (Rn; atomic mass = 211.4 amu). In 2002, the unstable element Ununoctium was synthesized, and although it is a member of group 18, it was later determined to be a solid at room temperature, so it is not classified as a noble gas.
Radon, unless you count the synthetic Ununoctium. But because it is radioactive, highly unstable, and synthetic, I would discount it for now. It does however have the largest atomic mass for any known atomic substance. So, the answer is Radon.
Radon has atomic mass of 222. There is isotope of Radon with mass number 226. Radon is a Nobel gas.
The element with an atomic mass of 222 amu is radon (Rn).
Radon has 34 isotopes; each isotope has a different atomic mass. See the link.
To type the chemical symbol for Radon with its mass and atomic number on a computer, you can use the following format: ^222Rn. This notation indicates that Radon has an atomic number of 86 and a mass number of 222.
222 Amu (atomic mass units) Each isotope of radon has a different atomic mass; see the link. The density of radon is 9,73 g/L.
Radon
Radon atomic symbol: Rnatomic number: 86
Atomic mass increases from top to bottom and left to right on the periodic table. In each row, the noble gasses have the highest atomic mass. As you travel down that column, also called a group or family, the noble gasses increase in atomic mass. The naturally occurring noble gas with the highest atomic mass is Radon (Rn; atomic mass = 211.4 amu). In 2002, the unstable element Ununoctium was synthesized, and although it is a member of group 18, it was later determined to be a solid at room temperature, so it is not classified as a noble gas.
Radon, unless you count the synthetic Ununoctium. But because it is radioactive, highly unstable, and synthetic, I would discount it for now. It does however have the largest atomic mass for any known atomic substance. So, the answer is Radon.
The atomic number of radon (Rn) is 86. The atomic weight of Rn is 222 grams per mole.
Radon-222 decays by alpha emission through the release of a helium nucleus, which consists of two protons and two neutrons. This process reduces the atomic number of the radon atom by 2 and the atomic mass by 4.
The weight of radium can vary depending on the specific isotope. For example, the most common isotope, radium-226, has an atomic weight of approximately 226 grams per mole.