Phosphorus occus in free state.

Explanation

**Step-by-Step Solution:**

1. **Understanding the Statement**: The question states, "Phosphorus occurs in free state." We need to evaluate the truth of this statement.

2. **Definition of Free State**: Free state refers to an element existing in its uncombined, elemental form, not bonded with other elements. For example, oxygen (O2) and nitrogen (N2) exist in free states.

3. **Occurrence of Phosphorus**: Phosphorus does not occur naturally in its elemental form. Instead, it is primarily found in combined forms, meaning it is bonded with other elements.

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