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.
Arnold Name Meaning. English and German: from a very widely used personal name of Germanic origin, composed of the elements arn âeagleâ + wald âruleâ.rnold Name Meaning. English and German: from a very widely used personal name of Germanic origin, composed of the elements arn âeagleâ + wald âruleâ.