Question

5 select the correct answer. what is the oxidation number of s in li₂so₄? a. +1 b. +2 c. +5 d. +6

Explanation:

Step1: Determine oxidation numbers of known elements

In \(Li_2SO_4\), lithium (\(Li\)) has an oxidation number of \(+1\) (group 1 metal), and oxygen (\(O\)) has an oxidation number of \(-2\) (common oxidation state in compounds).

Step2: Set up equation for net charge

Let the oxidation number of \(S\) be \(x\). The compound is neutral, so the sum of oxidation numbers is \(0\).

$$2(+1)+x + 4(-2)=0$$

$$2 + x-8 = 0$$

$$x-6 = 0$$

$$x = +6$$

Answer:

D. +6