Metal A belong to period 4 and group 8. A in red hot condtion reacts with steam to from B. A reacts with dulite HNO_(3) to give C. A agin reacts with conc H_(2)SO_(4) to give D . Find A ,B , C and D with suitable reaction .

Metal A belong to period 4 and group 8. A in red hot condtion reacts w

1.	Metal A belong to period 4 and group 8. A in red hot condtion reacts with steam to from B. A reacts with dulite HNO_(3) to give C. A agin reacts with conc H_(2)SO_(4) to give D . Find A ,B , C and D with suitable reaction .
Answer» Solution : (i)Metal (A) BELONG to period 4 and group 8 is iron (Fe) (ii)Iron (A) reacts with steam to FORM magnetic oxide (B) `3Fe+4H_(2)O ("steam")rightarrowFe_(3)O_(4)+4H_(2)uparrow`(iii) Iron (A) reacts with dilute `HNO_(3)` in cold condition to GIVE ferrous NITRATE (C) `4Fe+10HNO_(3)rightarrow4Fe(NO_(3))_(2)+NH_(4)NO_(3) + 3H_(2)O` (iv) Iron (A) reacts with conc. `H_(2)SO_(4)` to form ferric sulphate (D) `2Fe+6H_(2)SO_(4)rightarrowFe_(2)(SO_(4))_(3)+3SO_(2)+6H_(2)O`