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.
This interesting surname is of Anglo Saxon origin, and is a locational name from places called Marsden in Lancashire, and the West Riding of Yorkshire, deriving from the Olde English pre 7th Century mearc meaning boundary, and denu, valley; hence, a valley forming a natural boundary.he first recorded spelling of the family name is shown to be that of Alan de Marchesden, which was dated 1246, witness in the Assize Court Rolls of Lancashire, during the reign of King Henry 111, known as The Frenchman, 1216 - 1272.