The atomic number of the element is shown above the symbol. The atomic mass and the name of the element are shown below the symbol. The color indicates the physical state of the element at 25℃. The periodic table contains a weal...
Periodic Table 元素周期表(相对分子量) PERIOD 1 IA 18 VIIIA 1 1.008 2 4 1 H Group IUPAC Group CAS Metal Semi Metal Non Metal He Alkaline Metal Chalcogens Element Hydrogen 2 IIA 1 IA Alkaline Earth Metal Halogens Element 13 IIIA 14 IVA 15 VA 16 VIA 17 VIIA Helium 3 6.94 4 9.01 Ato...
The Periodic Table app contains detailed chemical and physical information of all chemical elements. Spice up your chemistry on Windows!
Periodic table of elements is a simple app that you can look up elements common properties. it is simple to use, contains a lot of information about elements and their behavior. it is interactive. you can click at any elements to see its property. on th
- Table solubility - To find any element you can use the search. The search engine is not choosy to the registry or writing style search. - You can sort the items in 10 categories: • Alkaline earth metals • Other nonmetals • Alkali metals • Halogens • Transition metals •...
最后,元素周期表底部的镧系和锕系元素,以及元素钪和钇,我们把他们统称做稀土元素〔Rare Earth Element〕,他们的储量比较丰富,例如:铈元素的储量和铜的储量类似。那为什么叫他们稀土元素呢?因为他们几乎都存在于一种叫独居石矿〔monazite〕中,很难将他们分离,所以产量稀少。
Element Fill Game: Challenge yourself to place elements correctly on the periodic table. Learn and Improve: At the end of each quiz, receive the correct answers to enhance your understanding and retention. Start your journey to mastering the periodic table with Periodic Table Element Quiz today!
element name atomic weight electron configuration other metals semi-metals non-metals halogens noble gases 8 9 氟 F fluorine 1 8.998 He.2s2.2p5 1 0 氖 Ne neon 20.1 80 He.2s2.2p6 1 1 鈉 Na sodium 22.990 Ne.3s1 12 鎂 Mg magnesium 24.305 Ne.3s2 3 / IIIb 21 鈧 Sc scandium 44.956 ...
Show Table With: Name Atomic Number Atomic Mass Electron Configuration Number of Neutrons Melting Point Boiling Point Date of Discovery Crystal Structure Element Groups: Alkali Metals Alkaline Earth Metals Transition Metals Other Metals Metalloids
Modified:Restructure package, separating tests into different directory When defining table extensions, you should now do: from elements.core import periodic_table, Element, Isotope rather than: from elements import periodic_table from elements.elements import Element, Isotope ...