Cobaltous is a 9 letter English word. It's valid Words with friends word worth 17 points.
You can make 429 anagrams from letters in cobaltous (abcloostu).
First recorded in 1860-65; cobalt + -ous
The cobaltous oxide was found to be much less active, requiring the above doses to be increased about two-thirds.
cobaltous hydroxide, Co(OH)2, is formed when a cobaltous salt is precipitated by caustic potash in the absence of air.
For the action of ammonia on the cobaltous salts in the presence of air see Cobaltammines (below).