are isotopes stable or unstable?
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Stable isotopes do not decay into other elements. In contrast, radioactive isotopes (e.g., 14C) are unstable and will decay into other elements.
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Usually one or two isotopes of an element are the most stable and common. Different isotopes of an element generally have the same physical and chemical properties. That's because they have the same numbers of protons and electrons.
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Atoms of the same element that differ in their numbers of neutrons are called isotopes.
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The largest known completely stable nucleus (i.e. stable to alpha, beta, and gamma decay) is lead-208 which contains a total of 208 nucleons (126 neutrons and 82 protons). Nuclei larger than this maximum are unstable and tend to be increasingly short-lived with larger numbers of nucleons.
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Which answer choice best explains why atoms of carbon-14 (C-14) are unstable? Atoms of C-14 have too many negatively charged electrons and too few positively charged protons. ... When an isotope's protons and neutrons come together to form a nuclide, a small amount of mass is converted to energy.
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Which means it's no longer carbon because carbon atoms always have six protons. ... With 92 protons and upwards of 140 neutrons, uranium atoms are massive. And no isotopes of uranium are stable — they're all radioactive.
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The atoms of a chemical element can exist in different types. These are called isotopes. They have the same number of protons (and electrons), but different numbers of neutrons. ... Because different isotopes have different numbers of neutrons, they do not all weigh the same or have the same mass.
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Isotopes are atoms that have the same numbers of protons but different numbers of neutrons. An ion is an atom that has gained or lost electrons, so it now has more or fewer electrons than it does protons. So an ion has a negative or positive charge.
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Atoms of the same element that differ in their numbers of neutrons are called isotopes. ... Different isotopes of an element generally have the same physical and chemical properties. That's because they have the same numbers of protons and electrons.
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Isotopes are atoms of the same element that have different numbers of neutrons but the same number of protons and electrons.
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ISOTOPES AND ATOMIC MASSES For many of the chemical elements there are several known isotopes. Isotopes are atoms with different atomic masses which have the same atomic number. The atoms of different isotopes are atoms of the same chemical element; they differ in the number of neutrons in the nucleus.
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Isotopes are forms of a chemical element that have the same atomic number but differ in mass. 16O → 8 protons + 8 neutrons; a “light” oxygen); The relative amounts are expressed as either 18O/16O or δ 18O Oxygen - 18 (aka 18O → 8 protons + 10 neutrons; a “heavy” oxygen).
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Isotopes have a same number of electrons and protons in all atoms. A . B . Isotopes : They are the atoms of a given element which have the same atomic number (Z) but different mass number (A) i.e. They have same Nuclear charge (Z) but different number of Neutrons (AZ).
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Hydrogen has three naturally occurring isotopes: 1H (protium), 2H (deuterium), and 3H (tritium). Other highly unstable nuclei (4H to 7H) have been synthesized in the laboratory, but do not occur in nature. The most stable radioisotope of hydrogen is tritium, with a half-life of 12.32 years.
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Isotopes of the same element must differ in the number of neutrons, not protons. If the isotopes differed in the number of protons, they would be completely different elements.
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Both actinides and lanthanides are highly reactive with elements from the halogen group. All of the lanthanides have at least one stable isotope except for promethium. None of the actinides have a stable isotope. They are all radioactive.
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H is a highly unstable isotope of hydrogen. The nucleus consists of a proton and four neutrons. It has been synthesised in the laboratory by bombarding tritium with fast-moving tritium nuclei.