| 1. | In general, most actinide isotopes with an odd neutron number are fissile.
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| 2. | Neutron number is primarily of interest for nuclear properties.
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| 3. | Nuclides that have the same neutron number but a different proton number are called isotones.
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| 4. | Neutron number increases along the line of beta stability at a faster rate than atomic number.
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| 5. | "' Isotopes "'are variants of a particular chemical element which differ in neutron number.
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| 6. | The neutron number has large effects on nuclear properties, but its effect on chemical properties is negligible for most elements.
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| 7. | Because positron emission decreases proton number relative to neutron number, positron decay happens typically in large " proton-rich " radionuclides.
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| 8. | Neutron number is rarely written explicitly in nuclide symbol notation, but appears as a subscript to the right of the element symbol.
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| 9. | The nucleus consists of Z protons, where Z is called the atomic number, and N neutrons, where N is the neutron number.
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| 10. | Neutron numbers for which there are two primordial nuclides are 88 ( 151 Eu and 152 Gd ) and 112 ( 187 Re and 190 Pt ).
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