Q.
The number of compounds in which oxidation state of halogen is less than $+5$ is_____.
i. Hypochlorous acid
ii. Chlorous acid
iii. Bromic acid
iv. Periodic acid
v. Hypoiodous acid
vi. Perchloric acid
The p-Block Elements - Part2
Solution:
Compound
Formula
Oxidation state of halogen
i
Hypochlorous acid
$HClO$
$+1$
ii
Chlorous acid
$HClO_2$
$+3$
iii
Bromic acid
$HBrO_3$
$+5$
iv
Periodic acid
$HIO_4$
$+7$
v
Hypoiodous acid
$HIO$
$+1$
vi
Perchloric acid
$HClO_4$
$+7$
| Compound | Formula | Oxidation state of halogen | |
|---|---|---|---|
| i | Hypochlorous acid | $HClO$ | $+1$ |
| ii | Chlorous acid | $HClO_2$ | $+3$ |
| iii | Bromic acid | $HBrO_3$ | $+5$ |
| iv | Periodic acid | $HIO_4$ | $+7$ |
| v | Hypoiodous acid | $HIO$ | $+1$ |
| vi | Perchloric acid | $HClO_4$ | $+7$ |