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What are the three main isotopes of potassium?
Ordinary potassium is composed of three isotopes(1), potassium-39, -40, and -41(2). The radioactivity from these naturally occurring isotopes presents no appreciable health hazard(1). Potassium-35 through -38 and potassium-42 through -54 are artificially produced and are radioactive(2).
How many isotopes does potassium have?
Potassium (K) has 24 known isotopes. Three isotopes occur naturally: 39K (93.3%), 40K (0.012%) and 41K (6.7%). The standard atomic mass is 39.0983(1) u.
What is the isotope charge of potassium-39?
zero
The charge of potassium-39 is zero. Potassium-39 has 19 protons.
How many neutrons are in an isotope of potassium 38?
List of isotopes
| Nuclide | Z | N |
|---|---|---|
| Excitation energy | ||
| 36K | 19 | 17 |
| 37K | 19 | 18 |
| 38K | 19 | 19 |
What is the most common potassium isotope?
potassium-39
All potassium atoms have 19 protons in the nucleus. The most common isotope of potassium is potassium-39. This means it adds 20 neutrons to the 19…
What is Lithiums most common isotope?
Lithium-7
Lithium-7 is by far the most abundant isotope, making up about 92.5 percent of all natural lithium. A lithium-7 atom contains three protons, four neutrons, and three electrons.
How is K 39 different?
They are different in their masses or mass number. Potassium- 39 has an atomic mass of 39 amu or mass number is 39, Potassium- 40 has an atomic mass of 40 amuor mass number is 40, and Potassium- 41 has an atomic mass of 41 amuor mass number is 41. The three isotopes have different numbers of neutrons.
Why is potassium-39 most abundant?
All potassium atoms have 19 protons in the nucleus. The most common isotope of potassium is potassium-39. This means it adds 20 neutrons to the 19…
What country has the largest deposit of lithium?
Chile
Where is lithium available from? With 8 million tons, Chile has the world’s largest known lithium reserves. This puts the South American country ahead of Australia (2.7 million tons), Argentina (2 million tons) and China (1 million tons).
How many protons and neutrons are in 39K?
The mass number is always the sum of the numbers of protons and neutrons and therefore is 39 in this instance. The atomic number of 19 shows that the atom is of the element potassium, and its symbol is 39K. How much is 39k a year an hour?
Which is the isotope of potassium with mass 39?
Potassium, isotope of mass 39. potassium-39 atom. (~39~K)Potassium. CHEBI:52632. DTXSID30930947.
Why does 40 K have a long half life?
The long half-life of this primordial radioisotope is caused by a highly spin-forbidden transition: 40 K has a nuclear spin of 4, while both of its decay daughters are even–even isotopes with spins of 0.