Draw the Lewis structure of chlorous acid (HClO2). The result is that around Cl there are Fill in the Blank 01 (a number) bonding groups and Fill in the Blank 02 lone pair(s) of electrons. The number and types of structural groups aroud Cl corresponds to the shape called Fill in the Blank 03 (one 4-letter word). The number and types of structural groups aroud Cl leads to the conclusion that the bonding groups are arrangement around Cl in a(n) Fill in the Blank 04 (a 10 letter word with 2 "n" letters inside) way, which means that the HClO2 is Fill in the Blank 05 (5-letter word with one "o" inside)