Examlex
A neutral atom has electron configuration 1s22s22p63s23p2. What element is this?
Mesa
A landform characterized by a flat-topped mountain or hill, typically with steep sides, found in arid and semi-arid regions.
Shield
A large, relatively flat expanse of ancient, Precambrian igneous and metamorphic rocks that form the stable continental core.
Well-developed Soils
Soils that have undergone extensive formation processes, exhibiting strong structural characteristics and distinct horizons or layers.
Unweathered Lava
Refers to lava that has been recently erupted and has not been altered by weathering processes.
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