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There are no known stable isotopes of the element with an atomic number of a 56 B 38 C100 D 20?
The element with an atomic number of 100 is Fermium (Fm), which does not have any stable isotopes. Fermium is a synthetic element that is produced in nuclear reactors and has only radioactive isotopes. Stable isotopes have a balance of protons and neutrons that result in a nucleus that does not undergo radioactive decay.
What else can I help you with?
All isotopes of this element are radioactive?
Radioactive Elements (38) These elements are radioactive. They either have no stable naturally occurring isotope, or else are entirely artificial (all artificial elements have no stable isotopes). by Andrew Moore
How many stable nuclides exist for elements that have and atomic number above 83?
All isotopes of all elements with atomic number similar or greater than 84 are radioactive, and don't have stable nuclei.
What does bromine 35 mean?
Bromine-35 refers to an isotope of bromine that has an atomic mass of 35 atomic mass units. It is one of the stable isotopes of bromine, with approximately 75% natural abundance. Isotopes of an element have the same number of protons but differing numbers of neutrons in their atomic nuclei.
What are the atomic number and mass number of bromine?
The mass number is the som of protons and neutrons in the atomic nucleus of a chemical element. Each isotope has a different mass number. For natural isotopes of bromine the mass numbers are 79 and 81.
How many neutrons are in Br?
There are 44 neutrons in 79Br and 46 neutrons in 81Br (the stable isotopes). Br is the chemical symbol of bromine.
Is this a stable element Carbon atomic number 6?
Yes, carbon (atomic number 6) is a stable element with both stable and unstable isotopes. The most common stable isotope of carbon is carbon-12, which makes up about 98.9% of naturally occurring carbon.
What is the first radioactive element number?
Of elements that have no stable isotopes, technetium has the lowest atomic number, which is 43.
What does the decimal tell you in an atomic mass?
that there are stable isotopes of that element
What would cause the average atomic mass to be close to a whole number?
The average atomic mass of an element is close to a whole number when the element has nearly equal amounts of its isotopes, with atomic masses that are close to whole numbers themselves. This occurs in elements with only one stable isotope or with stable isotopes that have similar abundances.
Which element has an atomic mass of11?
Atomic mass numbers are not properties of elements overall, but only of particular isotopes of elements. The only stable element with an isotope with mass number 11 is boron. Beryllium and carbon also have isotopes with mass number 11, but these are radioactive.
What are the atomic numbers and mass numbers of the stable and radioactive forms?
1. The atomic number is equivalent to the number of protons in the atomic nucleus of a chemical element. The number of protons is identical for all the isotopes of an element. 2. The mass number is the sum of protons and neutrons in the atomic nucleus of an isotope.
What is the lightest element without a stable isotope?
The lightest element without a stable isotope is Technetium (atomic number 43). All of its isotopes are radioactive, with none occurring naturally on Earth.
What element has most number of isotopes?
Tin or Stannum with 10 stable isotopes
What element is Xe6s24f145d6?
Osmium
All isotopes of this element are radioactive?
Radioactive Elements (38) These elements are radioactive. They either have no stable naturally occurring isotope, or else are entirely artificial (all artificial elements have no stable isotopes). by Andrew Moore
Does the atomic number of an element determine its mass?
Not by itself. The mass number is the sum of the numbers of protons and neutrons in he nucleus for each isotope of the element, or for elements with more than one stable isotope is an average depending on the natural abundance of the stable isotopes of the element.
Why can't atoms have 182 electrones?
The number of electrons in an atom equals the number of protons in its nucleus and is the element's atomic number. The periodic table does not contain any (stable) elements with 182 protons. It is possible for the isotopes of many elements to have an atomic mass (protons+neutrons) of 182, though. None of these isotopes are the most stable for the given element, and thus these are not listed on the periodic table. I think Tungsten has an atomic mass of 183?
