current are made of inorganic 1000
sn_2 is inorganic_substance. thermionic_current is current. nh2 is inorganic_substance. mno3_2 is inorganic_substance. sn_4 is inorganic_substance. ag is inorganic_substance. oh is inorganic_substance. mno4 is inorganic_substance. nh4 is inorganic_substance. aso4_3 is inorganic_substance.