The ammonium ion has a formula of NH4+ and has a positive charge so it is a cation.
Arnold /ar-nold/ [2 sylls.] as a boys' name is pronounced AR-nold. It is of Old French and Old German origin, and the meaning of Arnold is eagle ruler.From the phrase arn wald. Brought to Britain with the Norman invasion, lost popularity after the 13th century, and briefly revived in the late 19th century.rnold /ar-nold/ [2 sylls.] as a boys' name is pronounced AR-nold. It is of Old French and Old German origin, and the meaning of Arnold is eagle ruler.
The German surname derives from the word Berg, the word for mountain or hill, and means a resident on a mountain or hill, or someone from a toponym Berg, derived from the same. The pronunciation of the English name may sometimes be /ËbÉËrdÊÉr/ BUR-jÉr.