Yes. The ammonium ion has a formula of NH4+ and has a positive charge so it is a cation.
What does Asa mean? Asa [asa] as a boys' name (also used less generally as girls' name Asa) is pronounced AY-sah. It is of Hebrew origin, and the meaning of Asa is doctor, healer. Biblical: name of the third king of Judah, who reigned for forty years. Made popular by the Puritans in the 17th century.
Asa is a somewhat popular first name for males (#1133 out of 1220, Top 93%) and an even more popular surname for all people (#46083 out of 150436, Top 31%). (2000 U.S. Census). Presented below is the birth name popularity of Asa for boys.