What are the two important oxidation states of group 6 elements of the periodic table ?

Explanation

To determine the two important oxidation states of group 6 elements of the periodic table, we can follow these steps:

### Step 1: Identify Group 6 Elements
Group 6 elements in the periodic table include chromium (Cr), molybdenum (Mo), tungsten (W), and seaborgium (Sg).

### Step 2: Understand the Electronic Configuration
The electronic configurations of these elements are:
- Chromium (Cr): [Ar] 3d⁵ 4s¹
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