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.
See Lucky Number 4 Meaning Usage Dutch, Germanic Pronounced AH:RT, AHRT Aart Meaning Dutch short form of Arnold. Aart is a Dutch diminutive of Arnold. Arnold is a compound of âarnâ, which means eagle, and âwaldâ, which means powerful or strong. It is common in both the English as well as German speaking worlds.