`Fe^(2+)` এবং `Fe^(3+)` আয়নের ইলেকট্রনিক কনফিগারেশন লিখ। কোনটির

Fe^(3+) is reduced to Fe^(3+) by sing

Fe^(2+) and Fe^(3+) can be distinguished by

Fe^(3+) is reduced to Fe^(2+) of NaOH

Standard electrode potentials are Fe^(2+)//Fe, E^(@) = -0.44 V Fe^(3+)//Fe^(2+), E^(@) = -0.77 V If Fe^(3+), Fe^(2+) , and Fe block are kept together, then