What is the name of the following compounds?

A)CO
B)HCI2O

a) carbon monoxide.

b) no such animal. You may mean HClO2 which is chlorous acid.

A) The compound CO is called carbon monoxide.

B) The compound HCI2O is not a valid chemical formula.

To determine the names of the compounds CO and HClO2, we need to use chemical nomenclature rules.

A) CO: CO is a compound made up of carbon (C) and oxygen (O) atoms. By using the rules for naming binary compounds, we can determine its name. The element found on the left side of the formula, C (carbon), is named first and keeps its original name. The element on the right side, O (oxygen), changes its ending to "-ide." Therefore, the name of CO is carbon monoxide.

B) HClO2: HClO2 is a compound composed of hydrogen (H), chlorine (Cl), and oxygen (O). To name this compound, we need to use the rules for naming oxyacids. In this case, since it contains Cl and O, it is an oxyacid. We need to determine the charge of the oxyanion (ClO2) and its name. The oxyanion charge can be deduced from the subscript of hydrogen in the formula. If there is only one hydrogen, the charge will be -1; if there are two hydrogens, the charge will be -2, and so on. In HClO2, there is only one hydrogen, so the charge of ClO2 is -1. Following the naming rules for oxyacids, we modify the name of the oxyanion to include "ic" and add the prefix "chloro-." Therefore, the name of HClO2 is chlorous acid.