What is the average mass of an element's naturally occurring atom or isotopes?
Below are the 3 naturally occurring isotopes of Oxygen and their % Natural abundance.
Now multiply and find the average atomic weight of Oxygen
O-16 (15.99491463 * .99757) = 15.95605
O-17 (16.9991312 * 0.00038) = 0.00646 O-18 17.9991603 * 0.00205) = 0.036898
Sum =15.95605 + 0.00646 + 0.036898 = 15.9994
My Periodic Table has the Atomic Mass of Oxygen as 15.999. Yee Haw!
It is an isotope that occurs in nature, and is not manmade. Isotopes, by the way, are atoms that have the same number of protons, but different number of neutrons. The atomic number is the same, but atomic weight (or mass) is different. For instance, Carbon can be Carbon 10, 11, 12, or 14. They are all carbon.
An isotope of 39K is potassium-39. It is a stable and naturally occurring isotope of potassium. It makes up about 93% of all naturally-occurring potassium.
There are many elements that have only one naturally occurring isotope. When you get to transuranic elements the elements all have no naturally occurring isotopes. But all elements have isotopes, they just have to be created, maybe in a nuclear reactor or particle accelerator or a supernova explosion.
Yes, it is the only naturally occurring Uranium isotope that can be used, in fact it is the only naturally occurring isotope of any element that can be used and occurs in large enough quantities to be practical to use.
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.
Atomic weight, if the average is taken by weighting the mass of each naturally occurring isotope by its natural abundance.
By multiplying the mass number of each naturally occurring isotope of the element by the fractional abundance of the same isotope, then adding all the resulting products.
It is an isotope that occurs in nature, and is not manmade. Isotopes, by the way, are atoms that have the same number of protons, but different number of neutrons. The atomic number is the same, but atomic weight (or mass) is different. For instance, Carbon can be Carbon 10, 11, 12, or 14. They are all carbon.
An isotope of 39K is potassium-39. It is a stable and naturally occurring isotope of potassium. It makes up about 93% of all naturally-occurring potassium.
There are many elements that have only one naturally occurring isotope. When you get to transuranic elements the elements all have no naturally occurring isotopes. But all elements have isotopes, they just have to be created, maybe in a nuclear reactor or particle accelerator or a supernova explosion.
Carbon has a few isotopes. The most common naturally occurring isotope of it is C12. Mass number of it is 12.
having only one naturally occurring isotope
Tin is an element with ten naturally occurring isotopes.
Many elements have naturally occurring isotopes, varieties of the element that have different numbers of neutrons in the nucleus.
No, gold has only one naturally occurring isotope and it is non-radioactive.
12
Potassium-42 is a naturally occurring isotope of potassium. It is a radioisotope with a half-life of about 12.4 hours.