Radioactive dating process
Radioactive dating process - Chat six xnxx
Only through such radioactive decays or nuclear reactions can transmutation, the age-old dream of the alchemists, actually occur.
A change in nuclear charge means that the element has been changed into a different element.
Nuclei consist of positively charged protons and electrically neutral neutrons held together by the so-called strong or nuclear force.
This force is much stronger than the familiar electrostatic force that binds the electrons to the nucleus, but its range is limited to distances on the order of a few x10.
Materials that emit this kind of radiation are said to be radioactive and to undergo radioactive decay.
In 1899, Ernest Rutherford discovered that uranium compounds produce three different kinds of radiation.
For example, this can occur when the shape of the nucleus undergoes a change.
Neither the mass number nor the atomic number is changed when a nucleus emits a The time required for half of the atoms in any given quantity of a radioactive isotope to decay is the half-life of that isotope. For example, the half-life of C is 5730 years, thus it is useful for dating archaeological material.If nuclei come close enough together, they can interact with one another through the strong nuclear force, and reactions between the nuclei can occur. Two major classes of nuclear reactions are of importance: fusion and fission.As in chemical reactions, nuclear reactions can either be exothermic (i.e. Fusion is a nuclear process in which two light nuclei combine to form a single heavier nucleus.A given element can have many different isotopes, which differ from one another by the number of neutrons contained in the nuclei.In a neutral atom, the number of electrons orbiting the nucleus equals the number of protons in the nucleus.An example of a fusion reaction important in thermonuclear weapons and in future nuclear reactors is the reaction between two different hydrogen isotopes to form an isotope of helium: This reaction liberates an amount of energy more than a million times greater than one gets from a typical chemical reaction.