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What is the product of beta decay potassium-42?
I would assume potassium-42 decays into calcium-42 via beta decay. Potassium-42 --> Calcium-42 + electron
How does argon naturally occur?
Argon occurs as a result of the radioactive decay of 40K ( potassium 40 ) Potassium is common on Earth; about 1/60th of it's crust is potassium. Naturally occurring potassium is a mixture of three isotopes. Almost all of it is 39K and 41K, both of which are stable. About 1 atom in 10,000 is 40K, which is unstable. It has a very long half-life, >109 years; it decays to 40Ar which is stable.
What color it emitted by potassium?
In a flame test, the color released by potassium is lilac, which is a light purple. K is the symbol for the chemical element potassium, and its atomic number is 19.
What is potassium argon dating?
The radioactive decay of potassium 40 produces in argon 40. The proportion of these two isotopes in rocks permit their age to be calculated.
What particle does argon 39 atomic number 18 emit when it decays to potassium 39 atomic number 19?
An electron - also referred to as a beta particle.
What kind of radiation is emitted when polonium decays to astatine?
Polonium, which has an atomic number of 84, decays to astatine, which has an atomic number of 85, a negative beta particle is emitted.
What particle is emitted when Na-20 decays to Ne-20?
A positive electron (positron) is emitted.
Which particle is emitted when an atom OF 85Kr spontaneously decays?
a beta particle
What particle is emitted when P-32 decays to S-32?
beta
What particle is emitted when Cobalt-60 decays to Nickel-60?
0
What type of radiation is emitted when carbon 14 is decays?
Carbon-14 decays by beta-, which emits a W- boson that immediately decays into an electron and an electron anti-neutrino.
Why do you use potassium in determining the age of the ancient rock?
Some of Potassium-40 decays into Argon-40 at a half - life of 1.25 x10^9 years. [About 11% of K40 decays by this method, the other 89% decays into Ca40 which is stable. ] The Argon-40 remains trapped in the crystal matrix, and may with care be recovered. So it is just a matter of determining in the laboratory the proportions of each of the materials, and applying the half-life calculations. [A 70kg person has around 4000 K40 nuclei decaying each second!]
What is a Radioactive Parent?
Radio active parent elements decay to stable daughter elements i.e. the radio active parent Potassium 40 decays to Argon 40 Each radioactive isotope has it's own half life A half life is the time it takes for the parent radioactive element to decay to a daughter product, Potassium 40 decays to Argon 40 with a half life of 1 1/4 billion years. Therin lies the problem of storing nuclear waste
What type of particle is emitted when a U-235 decays to Np-235?
It is negative beta particle emitted by a uranium nucleus and converting it to neptunium nucleus.
Potassium -40 decays to the noble gas argon-40 what problems might arise when these radioactive isotopes are used for age dating?
The argon, being a gas, could escape, making ratios difficult to establish.
When a uranium atom 92u235 decays radioactivity to became protactinium 91u231 the radiation emitted are?
entropy
How does potassium-argon dating work?
The isotope potassium-40 decays into argon-40 at a predictable rate. By measuring the ratio of the two present in a rock, we can work out how long it is since the rock was formed from magma. where t is the elapsed time, t1/2 is the half life of the decay, Kf is the amount of potassium -40 left in the sample, and Arf is the amount of argon-40 present. Measuring the quantities of the isotopes is very easy with a mass spectrometer.
