Question

The cobalt hexammine cation has an atom of cobalt in the centre, surrounded by six molecules of ammonia that are attached to it. The shape of this ion is?

• A. Tetrahedral
• B. Square
• C. Linear
• D. Octahedral

Answer 1

The correct option is D Octahedral

REF.Image.

$C{O}^{3+}\Rightarrow \left[Ar\right]d^6\Rightarrow$

$\Rightarrow S{P}^3{d}^2$

$\Rightarrow \left[Co\right(N{H}_3{)}_6{]}^{3P}$

octagonal

$\Rightarrow P{P}^3{d}^2\to$ hydrogenation.