What are the terms defined in below?
A bond formed by complete transfer of an electron from an electropositive atom to an electronegative atom.

Explanation

### Step-by-Step Solution:

1. **Understanding the Terms**: The question asks for the definition of a bond formed by the complete transfer of an electron from an electropositive atom to an electronegative atom.

2. **Identifying Electropositive and Electronegative Atoms**:
- Electropositive atoms are typically metals found on the left side of the periodic table, such as alkali metals (Group 1) and alkaline earth metals (Group 2).
- Electronegative atoms are usually nonmetals located on the right side of the periodic table, particularly in Groups 15, 16, and 17.

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