Question

Point out incorrect stability order

• A. $[Fe(H_{2}O)_{6}]^{3+} < [Fe(NO_{2})6]^{3+} < [Fe (NH_{3)}6]^{3+}$
• B. ${[Fe(H_{2}O)_{6}]^{3+} < [Fe(NO_{2})_{6}]^{3-} < [Fe (NH_{3})_{6}]^{3+} }$
• C. $[Co(H_{2}O)_{6}]^{3+} < [Rh(H_{2}O)_{6} ]^{3+} < [Ir (H_{2}O)_{6}]^{3+}$
• D. $[Cr(NH_{3})_{6} ]^{+} < [Cr(NH_{3})_{6} ]^{2+} < [Cr (NH_{3})_{6}]^{3+}$

Answer 1

Answer: (B)

${[Fe(H_{2}O)_{6}]^{3+} < [Fe(NO_{2})_{6}]^{3-} < [Fe (NH_{3})_{6}]^{3+} }$

Answer 2

Increasing order of stability
(a) $\left[ Cu \left( NH {3}\right){4}\right]^{2+}