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The half-life is 700 million years !

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Reed Keeling

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3y ago
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15y ago

700 million years

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9y ago

Uranium 235 has a half life of about 7000 million years if 1 kg of U235 is put on a shelf in a laboratory and left for 700 million years 900 g would remain. The bigger question would be how the shelf and laboratory survived that long.

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9y ago

If a rock sample is determined to have one-quarter of the uranium-235 content it had when it formed the age of the rock sample is 1.426 billion years.

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14y ago

700 million (more exactly 703,8.106) years

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14y ago

Uranium 235 halflife: 7,038.108 years

Uranium 238 halflife: 4,468.109 years

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14y ago

The full decay chain of 235U takes about 70,413,000 years. It can be seen at the related link below. (It actually starts with 239Pu as a precursor to 235U.)

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7y ago

Uranium 235 has a half-life of 700 million years.

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14y ago

2.1 billion years old

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7y ago

704 million years.

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Q: Uranium-235 has a half life of?
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A uranium235 sample starts with 200 atoms and 700 million years later there are 100 atoms What is the halflife of uranium235?

700 milliion years. The definition of half-life is the period of time during which one-half of the atoms of an element undergo decay into other elements.


What is one bad use of uranium235?

can cause lung cancer


What is true about the fission of uranium235?

The reaction produces more neutrons than were needed to start it.


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Nuclear energy as used in power plants results from fission of uranium235 and plutonium239


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The time it takes for half the atoms in a sample of a radioactive element to decay is called the half life.


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Antibiotics do not have a half life.


What is the best way to say I missed half of my life or I've missed half of my life?

You say 'I've missed Half my life' which is short for : "I have missed half my life'


What is the term given to the time it take for one half of a sample of radioactive nuclei to decay?

The term is called half-life. It is the time it takes for half of the radioactive nuclei in a sample to decay.


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