Chromium-48 has a half-life of 21.6 h How long will it take 360.00g of chromium-48 to decay to 11.25g?

Answer 1

Potassium has many isotopes, but the half life of K40 is listed as 1.28x109 years.

This is a much used radioisotope.

Bananas which are rich in potassium have been known to set off radiation alarms at the shipping port, because of the K40 - Ar40 decay.

And another potassium trivia; you'll accumulate about as much radiation by sleeping alongside your partner (who has K40 decay proceeding) as you will get from the ionization type smoke detector.

Answer 2

Chromium-50 is the only naturally radioactive isotope of chromium. It has a half-life of 1.8x1017years. It decays to Titanium-50.

Answer 3

chlorides half life is either 308,000 or 300,000

Answer 4

The half-life of iron is near infinity. Iron is a stable element.

Answer 5

For the half lives of all curium isotopes see the link below.

Answer 6

Each isotope of technetium has another half life.
See the list of Tc isotopes at this link.

Answer 7

98.5h

Answer 8

120 days

Answer 9

108 h

Answer 10

infinite