Give the correct order of initials T and F for following statements. Use T for the statement if it is true and F if it is false.
I) Sulphide ions reacts with $N{a}_2\left[Fe{\left(CN\right)}_5\left(NO\right)\right]$  to form a purple coloured compound  $N{a}_4\left[Fe{\left(CN\right)}_5\left(NOS\right)\right]$. In the reaction, the oxidation state of iron changes
II) Pt(IV) compounds are relatively more stable than Ni(IV) compounds
III) The welding of magnesium can be done in the atmosphere of Helium
IV)  $LiAl{H}_4$  on hydrolysis will give  $H_2$.