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I believe the heaviest element known so far is called "Ununoctium," found of course in the bottom right hand side of the period table of elements. It is element 118 and its Atomic Mass is 294. It is a non-metallic noble gas. However, it is only assumed to be gas. To date, only three atoms of this element have ever been reportedly produced, all from the Joint Institute for Nuclear Research in Russia and the Lawrence Livermore National Laboratory in the USA.
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∙ 14y ago
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∙ 10y agoLr, or Lawrencium has the highes atomic weight, it has an atomic weight of 262.11
Wiki User
∙ 10y agoLr, or Lawrencium, with a weight of 262.11
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∙ 8y agoMore current answer: Ununseptium and Ununoctium are tied with 294.
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∙ 15y agoThe element with the greatest atomic mass is Meitnerium (formerly called Unnilerium). Its atomic mass is 266.
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∙ 15y agoHasium.
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What element in the periodic table has an atomic weight of 912.2?
The Truth? Well, there is no element with that atomic weight. The highest atomic weight is 262.11 Sorry!
What is the Highest atomic number on the Periodic Table?
The element provisionally named ununoctium, believed discovered in 2003, has atomic number 118 in Period 7, column 18, with an atomic weight of 294. Once confirmed, it will be given its permanent element name.
The atomic weight of an element is determined by what?
The atomic number of an element is determined by the number of protons in its nucleus.
An average of the masses of all the naturallly occurring isotopes of an element?
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.
What is the atomic weight of the element Tantalum?
The relative atomic mass is 180.948
What element in the periodic table has an atomic weight of 912.2?
The Truth? Well, there is no element with that atomic weight. The highest atomic weight is 262.11 Sorry!
What element has the atomic number of 168?
The element with the highest atomic number is Ununoctium (total quantity that has ever existed: three atoms), and its atomic number is 118. Thulium has an atomic weight of 168.9342.
What is the Highest atomic number on the Periodic Table?
The element provisionally named ununoctium, believed discovered in 2003, has atomic number 118 in Period 7, column 18, with an atomic weight of 294. Once confirmed, it will be given its permanent element name.
What element has 121.75 as it's atomic weight?
The element of Antimony (Sb) would have the atomic weight of 121.75.
What are the main contributors to the weight of an atomic element?
The protons and neutrons are the main contributors to the weight of an atomic element.
Which element has an atomic weight?
All elements have an (atomic) weight or mass.
How you calculate the relative atomic weight of uranium?
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
What element has an atomic mass of 50.942?
Vanadium is the element that has an atomic weight of 50.942.
What is the fraction in calculating the average atomic weight of an element?
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.
What is the atomic weight of petroleum 235?
Petroleum is not an element and therefore has no atomic weight!
Which element has atomic weight of 79?
Selenium (Se) has an atomic weight of 79,04.
What element has highest atomic volume?
Cesium
