Career
He was also Sweden"s discus competitor at the 2008 Summer Olympics. Arrhenius is of Swedish descent. Arrhenius is the son of Anders Arrhenius who was a professional shot put competitor in Sweden.
Niklas" younger brother, Leif Arrhenius is also a thrower.
Arrhenius was raised in Utah but has dual citizenship. He attended Brigham Young University where he was on the track and field team
Arrhenius is a Latter-day Saint. He served as an Latter- Day Saints (Mormons) missionary in the Sweden Stockholm Mission.
Discus Throw: 66.22 m (2011)
Shot Put: 19.75 (2010), 19.91 m indoor (2004)
While competing for Mountain View High School in Orem, Utah, Niklas was the National High School Record Holder for the discus for eight years, with a throw of 234"3" (breaking the previous record by nearly nine feet).