what is the radioactivity of potassium salts?

Question

it is a certain topic that we students from holy cross should prove

Answer 1

There are 24 isotopes of potassium (atomic number 19), ranging in atomic mass from 32 to 54 amu.

The most abundant isotope, K39 (which comprises 93.26% of all potassium known), is stable, as is the next most abundant isotope, K41 (6.73%). So the stable isotopes make up 99.99% of all the potassium in the world.

One other stable isotope, K32, is present in vanishingly small portions.

However, that remaining 0.01% consists of the other 21 known isotopes, all of which are radioactive to some degree:

K33 has a half-life less than 25 nanoseconds.
K34 has a half-life less than 40 nanoseconds.
K35 is a positron/gamma emitter with a half-life of 0.19 seconds.
K36 is a positron/gamma emitter with a half-life of 0.342 seconds.
K37 is a positron/gamma emitter with a half-life of 1.23 seconds.
K38m is a positron emitter with a half-life of 0.924 seconds.
K38 is a positron/gamma emitter with a half-life of 7.63 minutes.
K39 is stable.
K40 is 0.01% of the total, and is a beta/gamma emitter with a half-life of 1.26x10^9 years.
K41 is stable.
K42 is a beta/gamma emitter with a half-life of 12.36 hours.
K43 is a beta/gamma emitter with a half-life of 22.3 hours.
K44 is a beta/gamma emitter with a half-life of 22.1 minutes.
K45 is a beta/gamma emitter with a half-life of 17.8 minutes.
K46 is a beta/gamma emitter with a half-life of 1.8 minutes.
K47 is a beta/gamma emitter with a half-life of 17.5 seconds.
K48 is a beta/gamma emitter with a half-life of 6.8 seconds.
K49 is a beta/gamma emitter with a half-life of 1.26 seconds.
K50 is a beta emitter with a half-life of 0.472 seconds.
K51 is a beta emitter with a half-life of 0.365 seconds.
K52 is a beta emitter with a half-life of 0.105 seconds.
K53 is a beta emitter with a half-life of 30 milliseconds.
K54 is a beta emitter with a half-life of 10 milliseconds.

Answer 2

There are three naturally-occuring isotopes of potassium, with atomic masses 39, 40, and 41. Potassium 40 has a natural abundance of 0.012%, and a half-life of 1.25 billion years. Its primary decay path is a 1.312 MeV beta particle 89% of the time.

In practical terms, this means that a sample of potassium salts that contains a total of 1 gram of potassium will produce about 30 decays per second. Beta rays are quite penetrating, so this should be very easy to detect.

Answer 3

Potassium you know is not a radioactive substance so its salts with other non radioactive salts are not radioactive ur teacher may be fooling you all and also K-40 is not radioactive may its isotopes are not too ok

Answer 4

Radioactivity is the property of the nuclease of the atom . we know that the potassium has no radioactive isotope.So your question is meaningless.