In a metal

Options

A. all the electrons are free
B. all the electrons are bound to their parent atom
C. there are no electrons
D. some electrons are free

Explanation

**Step-by-Step Solution:**

1. **Understanding the Structure of Metals:**
Metals are known to have a specific atomic structure where electrons are arranged in different energy levels or orbits around the nucleus. The outermost electrons, known as valence electrons, play a crucial role in the conductivity of metals.

2. **Identifying Electron Behavior in Metals:**
In metals, some of the outermost electrons are not tightly bound to their respective atoms. These electrons can move freely throughout the metal lattice. This phenomenon is what allows metals to conduct electricity.

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