$N(CH_2CH_2NH_2)_3$ is a ...... ligand.

Which among the following statements is wrong regarding Mohr's salt?

Identify the anionic complex from the following.

The coordination numbers of $Fe$ in the complexes $[Fe(CN)_6]^{4-}$,$[Fe(CN)_6]^{3-}$,and $[FeCl_4]^{-}$ are respectively:

The oxidation state and covalency of $Al$ in $[AlCl(H_2O)_5]^{2+}$ respectively are

Consider the following statements according to Werner's theory:
$1.$ Ligands are connected to the central metal ions by coordinate bonds.
$2.$ Secondary valencies have directional properties.
$3.$ Secondary valencies are non-ionisable.
Which of these statements are correct?