The p -Block Elements

Acidic oxide -> Cl₂O₇

Neutral oxide -> N₂O, NO

Basic oxide ->Na₂O

Amphoteric oxide -> As₂O₃

B (OH)₃ is orthoboric acid having acidic nature, while Al (OH)₃ has amphoteric nature that is acidic and as well as basic

B (OH)₃ is orthoboric acid having acidic nature, while Al (OH)₃ has amphoteric nature that is acidic and as well as basic

Ionic radii of cations is smaller than anions, also more the positive charge less be the ionic radii and more the negative charge more be the ionic radii. Hence correct order of ionic radii is, $p^{3-}>S^{2-}>C{l}^{-}>K^{+}>C{a}^{2+}$

Hydroxyapatite is the calcium minerals whose molecular formula is $3C{a}_3{\left(P{O}_4\right)}_2.Ca{\left(OH\right)}_2$ ${}_{}{{}_{}}_{}{}_{}$ or $C{a}_{10}{\left(P{O}_4\right)}_6{\left(OH\right)}_2.$ ${}_{}{{}_{}}_{}{}_{}$ During contact with water dissolved F ion, hydroxyapatite converted into ${}_{}{{}_{}}_{}{}_{}$ $3C{a}_3{\left(P{O}_4\right)}_2.Ca{F}_2$ .

$K{O}_2,N{O}_2,Cl{O}_2,NO$ are paramagnetic.

Acidic oxides : $B_2{O}_3,P_4{O}_{10},S{O}_3,N_2{O}_5$  

Neutral oxide : $N_{2}O,$  NO, CO

$B{r}_2+5F_2\left(excess\right)\to 2Br{F}_5$

$Br{F}_5+3H_{2}O\to HBr{O}_3+5HF$