| atomic weight |
The nominal atomic weight of an isotope is given by the sum of the number of neutrons and protons in each nucleus. The exact atomic weight differs fractionally from that whole number because neutrons are slightly heavier than protons and the mass of the nucleus is also affected by the binding energy
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| atomic |
The center of an atom, containing both protons and (except for 1H) neutrons.
출처: www.palaeos.com/Geochronology/gcglossary.html
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| atomic weight |
The weighted average of the atomic masses of the different isotopes of an element. A single 12 C atom, for example, has a mass of 12 amu, but naturally occurring carbon also contains a 1.1% 13 C. The atomic weight of carbon is therefore 12.011 amu.
출처: xenon.che.ilstu.edu/genchemhelphomepage/glossary/a...
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| atomic number |
A number assigned to each element that identifies the number of protons in the nucleus of an atom.
출처: www.st.com/stonline/press/news/glossary/glossary.h...
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| atomic mass unit |
This is the smallest unit of mass we use in chemistry, and is equivalent to 1/12 the mass of carbon-12. To all intents and purposes, protons and neutrons weigh 1 amu
출처: misterguch.brinkster.net/vocabulary.html
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| atomic | a hard brittle blue-white multivalent metallic element |
|---|---|
| atomic | a hard brittle gray polyvalent metallic element that resembles iron but is not magnetic |
| atomic | a heavy ductile magnetic metallic element |
| atomic | a hard ferromagnetic silver-white bivalent or trivalent metallic element |
| atomic | a hard malleable ductile silvery metallic element that is resistant to corrosion |
| atomic | a ductile malleable reddish-brown corrosion-resistant diamagnetic metallic element |
| atomic | a soft silver-white univalent element of the alkali metal group |
| atomic | a bluish-white lustrous metallic element |
| atomic | a rare silvery (usually trivalent) metallic element |
| atomic | a brittle gray crystalline element that is a semiconducting metalloid (resembling silicon) used in transistors |
| atomic | a very poisonous metallic element that has three allotropic forms |
| atomic | a toxic nonmetallic element related to sulfur and tellurium |