The p -Block Elements

Correct order or atomic radii is

Tl > ln > Al > Ga > B

Kindly go therough the solution

NO is a neutral oxide. 

Angle of Ht – B – Ht > angle of Hb – B - Hb

Bond angle $\propto \mathrm{\%}S-Character\propto \frac{1}{\mathrm{\%}ofP-character}$ $\frac{}{}$

${}_{}$  $\angle H_t$ B Ht is more so % P-Character is less.

Kindly consider the following figure

Blood – Negatively charged colloid.

According to Hardy – Schulze Rule

FeCl₃ is more efficient for blood clotting

Kindly go through the solution

S > Se > Te > O

$BaC{l}_2+S{O}_3^{2-}\stackrel{}{\to }\underset{White}{BaS{O}_3}\downarrow \stackrel{dil.HCl}{\to }\underset{\begin{array}{l}burningsulphur\\ likesmell\end{array}}{S{O}_2\uparrow }$

Borax forms basic buffer solution in aqueous medium

In boron family lower O.S (+1) is more stabilize down the group due to inert pair effect.