Appearance of blood red colour on treatment of the sodium fusion extract of an organic compound with FeSO4 in presence of concentrated H2SO4 indicates the presence of element(s).
Which of the following is/are true about A',B',C'andD' ? A. Order of atomic radii: \( B' < A' < D' < C' \)B. Order of metallic character: \( B' < A' < D' < C' \)C. Size of the element: \( D' < C' < B' < A' \)D. Order of ionic radii: \( B^{+} < A^{+} < D^{+} < C^{+} \)Choose the correct answer from the options given below: