Identify the non-ionisable octahedral complex among the following.

The formula of the complex hydridotrimethoxyborate$(III)$ ion is:

Which of the following is not a chelating agent?

An octahedral complex with the formula $CoCl_3 \cdot nNH_3$ upon reaction with excess of $AgNO_3$ solution gives $2$ moles of $AgCl$. Consider the oxidation state of $Co$ in the complex is '$x$'. The value of $x+n$ is . . . . .

$1 \ mol$ of an octahedral metal complex with formula $MCl_{3} \cdot 2 \ L$ on reaction with excess of $AgNO_{3}$ gives $1 \ mol$ of $AgCl$. The denticity of ligand $L$ is ...... . (Integer answer)

In the complex ion $[Co(NH_3)_6]^{3+}$,the $NH_3$ molecules are linked to the metal atom by .......