Chemistry

Due the absence of inversion and non resonating nature

The pair of herbicides is sodium chlorate and sodium arsinite

Following is the reaction of KMnO4 in basic medium with thiosulphate anion.

$\stackrel{+7}{8Mn{O}_4^{-}}+3S_2{O}_3^{--}+H_{2}O\to \stackrel{+4}{8Mn{O}_{2|}}+6S{O}_4^{--}+2O{H}^{-}$

Change = 7 – 4 = 3

  $S{c}^{3+}-3d^0$ electron in last subshell

$Z{n}^{2+}-3d^{10}$ electron in last subshell

$T{i}^{4+}-3d^0$ electron in last subshell

$C{u}^{2+}-3d^9$ electron in last subshell

$V^{2+}-3d^3$ electron in last subshell

$T{i}^{3+}-3d^1$ electron in last subshell

$M{n}^{2+}-3d^5$ electron in last subshell

SCl₂ – 2 lone pair of central atom

O₃ – 1 lone pair of central atom

ClF₃ – 2 lone pair of central atom

SF₆ – 0 lone pair of central atom

 $4LiN{O}_3\underset{\Delta }{\overset{}{\to }}2L{i}_{2}O+4N{O}_2+O_2$

$NaN{O}_3\underset{\Delta }{\overset{}{\to }}NaN{O}_2+\frac{1}{2}{O}_2$

Following is the reaction of Zn with excess alkali,

$Zn+2NaOH+2H_{2}O\to N{a}_2{\left[Zn\left(OH\right)\right]}_4+H_2$

$N{a}_{2}Zn{O}_2+2H_{2}O$

$2N{a}^{+}Zn{O}_2^{--}$

In ores/mineral available earthy and undesired impurities are gangue

Following is the trends of I.E. of given metals $\left(1^{st}I.P\right)Na<Al<Mg<Si$

This is the method of preparation of lyophilic solution as condition is given.