Chemistry - Complete d-block Question with Solution | TestHub

Identify Metal- ${\mathbf{M}}_1$, Metal- ${\mathbf{M}}_2$ and Metal- ${\mathbf{M}}_3$ of 3 d series based on following information.

* Comparatively low value of[E⁰ (M⁺³/M⁺²)=0.26]  for Metal-M₁  is related to the stability of its +2 ion due to half filled symmetrical t_2g level.

* For Metal-M₂  , its highest oxidation state is not represented in simple halides but observed in oxides and some oxo halides.

* Dipositive aquated ion of Metal-M₃  has same colour as tripositive aquated ion of Metal-M₁  and complexes of Metal-M₃  are useful in polymerisation of alkynes.

Write some of atomic number of ${\mathbf{M}}_1+{\mathbf{M}}_2+{\mathbf{M}}_3=$ ?