<prompt> Beha lintlha tse latelang ka tatellano e ntseng e eketseha ea nomoro ea athomo: oksijene, calcium, helium.nan  <response>: Instruction in English: Place the following elements in increasing order of atomic number: oxygen, calcium, helium. . Response in English: The elements in increasing order of atomic number are: Helium atomic number 2, Oxygen atomic number 8, and Calcium atomic number 20. . Response in Sesotho: Lielemente ka tatellano e ntseng e eketseha ea nomoro ea athomo ke: Helium nomoro ea athomo ea 2, Oksijene nomoro ea athomo 8, le Calcium nomoro ea athomo ea 20. 