Define ionization energy. How would the ionization energy change when electron in hydrogen atom is replaced by a particle 200 times heavier than electron, but having the same charge?

Explanation

**Step-by-Step Solution:**

1. **Definition of Ionization Energy:**
- Ionization energy is defined as the minimum energy required to remove an electron from the ground state of an atom or ion. For a hydrogen atom, it is the energy needed to remove the electron from its lowest energy level.

2. **Understanding the Ground State Energy Formula:**
- The energy of the ground state of a hydrogen atom can be expressed using the formula:
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