From the list, given below, select the correct answers for
[Isobars, Isotopes, Efflorescence, Hygroscopy, Charles's law, Boyle's law, Kelvin, Thermal dissociation, Thermal decomposition].
Atoms of the same element having the same atomic number but different mass numbers.

Explanation

To solve the question, we need to identify the term that describes "atoms of the same element having the same atomic number but different mass numbers." Let's break down the solution step by step:

### Step-by-Step Solution:

1. **Understanding Atomic Number and Mass Number**:
- The atomic number of an element is the number of protons in its nucleus. It defines the element.
- The mass number is the total number of protons and neutrons in the nucleus.

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