To ba da wa, o je elimenti metali alkalini ile to ni awo irin-ide, to lagbara, fifuye ati rirun wewe.Itokasi  Awon elimenti kemikaAwon aseresileAwon metali alkalini ile.. 
The concentration of 12c is further increased in Biological matemberton because Biotẹ́nì reactions disculpablete against 13.. 