Two atoms with different mass number but the same atomic number are called...

Isotopes: Variants of a Chemical Element

Isotopes are atoms of the same element with different numbers of neutrons. Despite having the same number of protons and electrons, isotopes vary in their neutron count. This difference in neutron number leads to variations in atomic mass.

Understanding Isotopes

Elements: Elements are the fundamental substances listed on the periodic table, each identified by a unique number of protons in its nucleus. Isotopes are different forms of these elements with varying neutron counts.

Ions: Ions are charged particles that form when atoms gain or lose electrons. They do not define atoms with different mass numbers but the same atomic number.

Nuclei: The nucleus is the core of an atom containing protons and neutrons. While isotopes differentiate based on neutron numbers in the nucleus, nuclei alone do not represent atoms with differing mass numbers but matching atomic numbers.

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