They are called the trans-uranic elements. They are either synthetic or the rare product of radioactive decay.
In a given period, group 18 elements will have the highest atomic number.
Elements are arranged in order of their Proton Number/Electron Number. they are NOT arranged in Atomic Mass , because a given element my have isotopes, which alters the Atomic Mass.
The atomic number is the number of protons in an atom's nucleus. Given an atomic mass of 201, this information alone does not provide the atomic number as different elements can have the same atomic mass due to isotopes. More specific information about the element is needed to determine the atomic number.
Detergent is composed of chemical compounds of a variety of types and thus has no "atomic number". Only elements have atomic numbers: all elements are given in the Periodic Table and are arranged by their atomic numbers. The atomic number equals the number of protons in the nucleus of the atom: each element is distinct in the number of protons the atoms contain.
Atomic number: number of protons in a nucleus unique to an element Atomic Mass number: number of protons + number of neutrons in a nucleus. May be a small range of values for a given element. Very roughly the atomic mass number is double the atomic number. For large elements it is more than double.
Atomic number is a unique number for each element. No two elements have the same atomic number. Atomic number is also the number of protons in the nuclei of the atoms of any given atom. Atomic mass, however, is the number of protons, neutrons and electrons. The number of neutrons can vary with different isotopes of the same element, this means that atomic mass can vary with different isotopes. So atomic number does not vary, but atomic mass does, so it is more logical to use atomic number to organize the elements. In addition, when the elements are arranged according to atomic number into seven rows and 18 columns, it becomes evident that there are certain trends that occur across the periods, and that elements in the same group have similar properties.
The number of protons in a nucleus depends on the specific atom. In the periodic table of elements, the number of protons a given element has is equal to its atomic number.
The number of protons in a nucleus depends on the specific atom. In the Periodic Table of elements, the number of protons a given element has is equal to its atomic number.
The number of protons in a nucleus depends on the specific atom. In the Periodic Table of elements, the number of protons a given element has is equal to its atomic number.
Each atom of one specific element has the same number of protons. For example, Helium has 1 proton in every atom's nucleus. To find how many protons are in an elements atoms nucleus, look at the elements atomic number on the Periodic Table.
If you mean "how does one determine an atoms atomic mass?", then the answer would be to find a periodic table of elements where the whole numbers indicate atomic number and the other indicating atomic mass. Atomic number is generally described as the number of protons in a naturally occurring atom of a given element, and the atomic mass is the number of protons + number of neutrons in an atom.
Atomic mass includes the total mass of protons, neutrons, and electrons in an atom. Since protons and neutrons contribute significantly to the mass of an atom, atomic mass is generally greater than atomic number, which represents the number of protons in the nucleus. Electrons have a much smaller mass compared to protons and neutrons, so they have less impact on the overall atomic mass.