Isotopes
Bayani Gaba-gaba
You might expect every atom of an element to be identical, but many elements come in slightly different versions. These versions, called isotopes, have the same chemistry but different masses. Chlorine, for example, is a blend of two isotopes, which is why its relative atomic mass is not a whole number.
In this lesson you will learn exactly what an isotope is, why isotopes of an element behave identically in chemical reactions, and how their existence explains the average masses you see in the Periodic Table.
Manufura
- Define isotopes as different atoms of the same element that have the same number of protons but different numbers of neutrons.
- Interpret and use symbols for atoms, e.g. ¹²₆C, and ions, e.g. ³⁵₁₇Cl⁻.
- [Supplement] State that isotopes of the same element have the same chemical properties because they have the same number of electrons and therefore the same electronic configuration.
- [Supplement] Calculate the relative atomic mass of an element from the relative masses and abundances of its isotopes.
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Nazarin Darasi
Barka da kammala darasi akan Isotopes. Yanzu da kuka bincika mahimman ra'ayoyi da ra'ayoyi, lokaci yayi da zaku gwada ilimin ku. Wannan sashe yana ba da ayyuka iri-iri Tambayoyin da aka tsara don ƙarfafa fahimtar ku da kuma taimaka muku auna fahimtar ku game da kayan.
Za ka gamu da haɗe-haɗen nau'ikan tambayoyi, ciki har da tambayoyin zaɓi da yawa, tambayoyin gajeren amsa, da tambayoyin rubutu. Kowace tambaya an ƙirƙira ta da kyau don auna fannoni daban-daban na iliminka da ƙwarewar tunani mai zurfi.
Yi wannan ɓangaren na kimantawa a matsayin wata dama don ƙarfafa fahimtarka kan batun kuma don gano duk wani yanki da kake buƙatar ƙarin karatu. Kada ka yanke ƙauna da duk wani ƙalubale da ka fuskanta; maimakon haka, ka kallesu a matsayin damar haɓaka da ingantawa.
- Isotopes of an element have the same number of: A. Neutrons B. Protons C. Nucleons D. Mass numbers Answer: B
- Isotopes of an element differ in their number of: A. Protons B. Electrons C. Neutrons D. Shells Answer: C
- Why do isotopes of an element react in the same way? A. They have the same number of neutrons B. They have the same electron arrangement C. They have the same mass D. They are radioactive Answer: B
- How many neutrons are in an atom of chlorine-37? (proton number 17) A. 17 B. 18 C. 20 D. 37 Answer: C
- Why is the relative atomic mass of chlorine 35.5 and not a whole number? A. Chlorine has half a neutron B. It is an average of its isotopes C. Chlorine has no isotopes D. The protons vary Answer: B
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Yi aikin wadannan tambayoyi a cikin manhaja
Littattafan da ake ba da shawarar karantawa
Ƙarin koyo daga tushe na buɗe
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Sashen littafi
Atomic Structure and Symbolism
Write and interpret symbols that depict the atomic number, mass number, and charge of an atom or ion
"Chemistry: Atomic Structure and Symbolism" by OpenStax, OpenStax, Rice University, licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Source: https://openstax.org/books/chemistry/pages/2-3-atomic-structure-and-symbolism. Access for free at https://openstax.org/books/chemistry/pages/1-introduction
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Sashen littafi
Evolution of Atomic Theory
Outline milestones in the development of modern atomic theory
"Chemistry: Evolution of Atomic Theory" by OpenStax, OpenStax, Rice University, licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Source: https://openstax.org/books/chemistry/pages/2-2-evolution-of-atomic-theory. Access for free at https://openstax.org/books/chemistry/pages/1-introduction
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