ダウンロード Chemical element APK無料

Chemical element

The free application "Chemical element" is very friendly, it has a beautiful and simple interface. The best choice for a pocket dictionary that is always at hand. From which you can learn a lot of new and interesting things, for example, that:

Osmium
Osmium is a chemical element with the symbol Os and atomic number 76. It is a hard, brittle, bluish-white transition metal in the platinum group that is found as a trace element in alloys, mostly in platinum ores. Osmium is the densest naturally occurring element, with an experimentally measured density of 22.59 g/cm3. Manufacturers use its alloys with platinum, iridium, and other platinum-group metals to make fountain pen nib tipping, electrical contacts, and in other applications that require extreme durability and hardness. The element's abundance in the Earth's crust is among the rarest.

Island of stability
In nuclear physics, the island of stability is a predicted set of isotopes of superheavy elements that may have considerably longer half-lives than known isotopes of these elements. It is predicted to appear as an "island" in the chart of nuclides, separated from known stable and long-lived primordial radionuclides. Its theoretical existence is attributed to stabilizing effects of predicted magic numbers of protons and neutrons in the superheavy mass region.

Yttrium
Yttrium is a chemical element with the symbol Y and atomic number 39. It is a silvery-metallic transition metal chemically similar to the lanthanides and has often been classified as a "rare-earth element". Yttrium is almost always found in combination with lanthanide elements in rare-earth minerals, and is never found in nature as a free element. 89Y is the only stable isotope, and the only isotope found in the Earth's crust.

Features:
• The dictionary works offline - you do not need an internet connection. Access to articles (descriptions) offline, without an Internet connection (except for photographs);
• Very quick search for descriptions. Equipped with a quick dynamic search function - the dictionary will start searching for words during input;
• Unlimited number of notes (favorites);
• Bookmark - you can add descriptions to your favorites list by clicking on the asterisk icon;
• Manage bookmark lists - you can edit your bookmark lists or clear them;
• Search History;
• Voice search;
• Compatible with modern versions of Android devices;
• Very efficient, fast and good performance;
• An easy way to share with friends;
• The application is very easy to use, fast and with extensive content;
• Automatic free updates every time new terms are added;
• The directory "Chemical element" is designed to occupy as little memory as possible.

Features Premium:
✓ no ads;
✓ photos, images of access offline;
✓ Clear browsing history.