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.
Oliver is a masculine given name of Old French origin; Oliver is one of Charlemagne 's retainers in the 11th-century Song of Roland.liver is a masculine given name of Old French origin; Oliver is one of Charlemagne 's retainers in the 11th-century Song of Roland.