The ammonium ion has a formula of NH4+ and has a positive charge so it is a cation.
Meaning & History. From a Germanic name meaning eagle power, derived from the elements arn eagle and wald power. The Normans brought it to England, where it replaced the Old English cognate Earnweald.It died out as an English name after the Middle Ages, but it was revived in the 19th century.aints bearing the name include an 8th-century musician in the court of Charlemagne and an 11th-century French bishop who is the patron saint of brewers. It was also borne by Arnold of Brescia, a 12th-century Augustinian monk who rebelled against the church and was eventually hanged.
Meaning of Helmut. German name. In German, the name Helmut means-brave.The name Helmut originated as an German name. The name Helmut is most often used as a boy name or male name.German Name Meaning-brave.Origin-Germany.erman name. In German, the name Helmut means-brave.The name Helmut originated as an German name. The name Helmut is most often used as a boy name or male name. German Name Meaning-brave. Origin-Germany.