Find the names of 20 metals having Atomic Mass less than 50 their symbol, physical state
Magnets can be made from many different metals so there is no specific atomic mass.
Rn has 86 electrons, Th is the closest to having an atomic mass of 230
You add up the mass of the protons, neutrons, and electrons. Protons and Neutrons having an atomic mass of 1, and electrons having an atomic mass of roughly 1/1800.
a number having no physical meaning.
Element Palladium has an atomic mass of 106.42 .It has atomic number 46.It belongs to the group of transition metals.
No. In fact lithium, one of the alkali metals, is the lightest metal. In terms of molecular mass the heaviest metals are the actinides. In terms of density the densest metals are osmium and iridium.
Barium (Ba), Radium (Ra) have atomic masses greater than strontium.
Because most naturally occurring elements are a mixture of isotopes, each having a different atomic mass. These individual isotopic atomic masses must be combined accounting for the amount of each isotope of the element is present to get a weighted average atomic mass.
A sodium cation is not likely to be considered a heavy metal because it is a light element with a low atomic number and relatively low atomic mass. Heavy metals are typically defined as metals with high atomic numbers and densities, which sodium does not exhibit.
Alkali metals have a low density because they have a single valence electron that is loosely held, leading to larger atomic size and lower atomic mass. This results in a less compact arrangement of atoms, contributing to the low density observed in alkali metals.
Originally these relative masses were based on hydrogen, known to be the lightest element, having a mass of 1 u, and all the MORE
The density of group 2 metals increases as you go up the group. This is because atomic radius decreases as you go up the group. Density is mass / volume and the ratio of mass to volume of atoms of the elements goes up with the decrease in radius.