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.
Originally a short form of Germanic names that began with the element ermen meaning whole or universal. It was introduced to England by Emma of Normandy, who was the wife both of king Ethelred II (and by him the mother of Edward the Confessor) and later of king Canute.riginally a short form of Germanic names that began with the element ermen meaning whole or universal. It was introduced to England by Emma of Normandy, who was the wife both of king Ethelred II (and by him the mother of Edward the Confessor) and later of king Canute.