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.
Danny Arnold (I) (1925â1995) Danny Arnold was born on January 23, 1925 in New York City, New York, USA as Arnold Danny Rothman. He was a writer and producer, known for Barney Miller (1974), The Caddy (1953) and The Wackiest Ship in the Army (1965). He was married to Donna and Joanne Gilbert.