(Encyclopedia) alkaline-earth metals, metals constituting Group 2 of the periodic table. Generally, they are softer than most other metals, react readily with water (especially when heated), and are…
(Encyclopedia) holmiumholmiumhōlˈmēəm [key] [Lat.,=Stockholm], metallic chemical element; symbol Ho; at. no. 67; at. wt. 164.93032; m.p. about 1,474℃; b.p. about 2,425℃; sp. gr. 8.78 at 25℃; valence…
(Encyclopedia)
HOLY ROMAN EMPERORS(including dates of reign)
Saxon dynasty
Otto I, 936–73
Otto II, 973–83
Otto III, 983–1002
Henry II, 1002–24
Salian or Franconian dynasty
Conrad II,…
(Encyclopedia) United Nations Members
Country
Year of Entry
Afghanistan
1946
Albania
1955
Algeria
1962
Andorra
1993
Angola
1976
Antigua and Barbuda
1981
Argentina
1945
Armenia
1992…
(Encyclopedia)
Supreme Court Justices(including dates on bench)
Chief Justices
John Jay
1789–95
John Rutledge
1795
Oliver Ellsworth
1796–1800
John Marshall
1801–35
Roger B. Taney
1836–64…
METAL GROUPSGOLD IN QUARTZEXTRACTING GOLDMETALLIC PROPERTIESALLOYSFIND OUT MOREAlmost three-quarters of all elements are metals, such as gold and silver. There are also some elements we may not…
WHY WERE NILE FLOODS IMPORTANT? WHO DID THE EGYPTIANS WORSHIP? WHY DID EGYPTIAN CIVILZATION LAST SO LONG?PHARAOHSPYRAMIDSMUMMIFICATIONFIND OUT MOREFrom around 3100 BC to 30 BC, the dry desert…
The Last Train to QuarkvilleTheories of the UniverseForces, Particles, and Some Cosmological GlueSize in the MicrocosmThe Forces You Already KnowThe Particle ZooThe Last Train to Quarkville The…
