Name the term used when a quantity neither varies nor can have arbitrary values?

Explanation

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks for a term that describes a quantity that does not vary and cannot take arbitrary values. This means we are looking for a specific type of quantity in physics or chemistry.

2. **Identifying the Concept**: In physics, certain quantities are known to be quantized. This means they can only take on specific, discrete values rather than any value within a continuous range.

3. **Examples of Quantized Quantities**:
- **Charge**: The electric charge is quantized. For example, the charge on an object is an integral multiple of the elementary charge (the charge of an electron). This means charges cannot be fractions of the elementary charge, such as 2/3 or 1/3 of the charge of an electron.
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