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 can be classified as an many things: actor, politician and businessman, however, he started his career out as a weight-lifter/bodybuilder. Born on 30th July 1947 with a keen interest in physical fitness. Arnold was a five-time Mr. Universe and seven-time Mr. Olympia champion. This allowed him to have a go act Hollywood and acting.