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| What are the 3 nucleus forces |
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Definition
| Gravitational, Electrostatic, Nuclear Force |
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Interaction- Very Weak attractive force between all nucleons
Range- Relatively long |
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| Force- Electrostatic or Coulomb |
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Definition
Strong repulsive force between like charged particles ( protons)
Range- Relatively long |
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Strong attractive force between all nucleons
Range- Extremely short |
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Definition
| Atomic Number, Number of protons |
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| Mass number, number of nucleons |
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| What is the line of stability |
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Definition
| The stable range can be graphed, also it represented by the ratio of neutrons to protons for naturally occurring stable isotopes |
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Definition
| Same mass number, different atomic number |
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Definition
| Emissions of particles or energy from the nucleus |
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Definition
| the property of certain nuclides to spontaneously emit radiation |
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| What is radioactive decay |
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Definition
| process by which a nucleus spontaneously disintegrates ( or is transformed) by one or more discrete energy steps until a stable state is reached |
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Term
| Certain nuclides are unstable as they occur in nature and are therefore referred to as being "Naturally Radioactive, While others are Artificially radioactive" because they have become radioactive as a result of some man-made reaction. Evidence or this was reported by |
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Definition
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| The nucleus before the decay or transformation is called what |
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Definition
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| The nucleus after the decay is called |
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| As various steps from parent to daughter are traced to stability, a series of transmutations is seen called |
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Definition
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| Who showed there were three kinds of radioactive emissons, which he named alpha, beta, and gamma, after the first three letters of the greek alphabet |
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Definition
| Ernest Rutherford in 1903 |
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| It consists of two protons and two neutrons giving it a mass of 4 amu. The symbol is "a" |
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Definition
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| A nuclide that has an excess number or neutrons ( the n:p ratio is high) will usually decay by beta emissons. They have the same mass as an electron (1/1836 of proton or 5.49E-4amu) as well as the same charge (-1)can be considered high speed electrons "beta-minus" emissons ( particle sometimes being referred to as a negatron) The symbol B- |
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Definition
| A nuclide that has a low n:p ratio 9 ( too many protons) Positron is the anti- particle of an electron, this means that is has the oppsite charge (+1) of an electron ( or beta particle) "beta-plus"the symbol is B+ |
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Definition
| the parent nucleus changes a proton into a neutron and gives off a positively charged particle. the results in a daughter less positive by one unit of charge |
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Definition
| Radionuclides having a low n:p ratio, orbital shell of the atom, usually the K shell. This mode of decay is frequently referred to as K-capture, |
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