I can't really explain anything here. I don't spend countless hours memorizing this stuff. I simply take a look at the periodic table. So, looking at the Periodic Table, I know the masses of elements generally increase as I scroll through. It's kind of like looking through a book, namely the page numbers. Looking, i see that iodine (I, atomic number 53) has that Atomic Mass.
You are probably referring to Iodine which has an atomic weight of 126.90447
The element Xenon (number 54 on the periodic table) has an atomic weight of 131.29
Iodine
Iodine (I)
Iodine
Aluminium
The Truth? Well, there is no element with that atomic weight. The highest atomic weight is 262.11 Sorry!
The atomic number of an element is determined by the number of protons in its nucleus.
The weighted average for all isotopes that occur in nature for an element is its atomic weight listed on the Periodic Table of the elements.
The relative atomic mass is 180.948
The standard atomic weight of Titanium (Ti) is 47.867(1) g·mol−1
The Truth? Well, there is no element with that atomic weight. The highest atomic weight is 262.11 Sorry!
The element of Antimony (Sb) would have the atomic weight of 121.75.
The protons and neutrons are the main contributors to the weight of an atomic element.
All elements have an (atomic) weight or mass.
The atomic weight of an element is derived from the atomic masses of the isotopes of this element and from the percentage of these isotopes. The correct terms are: - atomic weight for elements - atomic mass for an isotope
Vanadium is the element that has an atomic weight of 50.942.
The atomic weight (not mass) of a chemical element is calculated considering the isotopic composition of the element and the atomic masses (not weights) of these isotopes.
Petroleum is not an element and therefore has no atomic weight!
Selenium (Se) has an atomic weight of 79,04.
a fly is not an element so it does not have an "atomic" weight. It does have a mass or weight however
The atomic number of an element is determined by the number of protons in its nucleus.
Average weight of an element expressed in Atomic Mass units.