Final answer:
The compound LiCl is named lithium chloride. Lithium has an oxidation number of +1, and chlorine has an oxidation number of -1, because binary ionic compounds are electrically neutral.
Step-by-step explanation:
To name the compound LiCl and identify the oxidation numbers of its atoms, we first recognize that it is a binary ionic compound consisting of a metal and a nonmetal. The compound's name is lithium chloride. In binary ionic compounds, the metal (in this case lithium) is named first, followed by the nonmetal (chlorine) with its ending changed to '-ide', resulting in 'chloride'.
For the oxidation numbers, lithium (Li) is in group 1 of the periodic table and therefore commonly forms a +1 charge. Chlorine (Cl), being a halogen, typically has an oxidation number of -1 when it is part of a binary ionic compound. Since LiCl is a neutral compound, the oxidation numbers of lithium and chlorine must balance out. Therefore, lithium has an oxidation number of +1, and chlorine has an oxidation number of -1 in LiCl.