The atomic species of an element possessing same atomic number but different atomic mass number is called ____________.

Isobar

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Isotope

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Isochore

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None of these

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Solution

The correct option is D Isotope
If the atomic number of two atoms are same, but mass numbers are different then these atoms are called as isotopes.

The atom’s mass number tells the number of protons and neutrons that atom has in its nucleus.

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Similar questions

Atoms of an element having same atomic number but different mass numbers are called _______________.

Consider the following statements:

1. The number of protons in the nucleus of an atom of a given element is called the atomic number of that element.

2. Mass number of an atom is defined as the sum of number of protons and neutrons present in the nucleus of an atom.

3. Atoms of an element that have the same atomic number (Z) but different mass number (A) are called isotopes.

Which of the above statements is incorrectly stated?

Nuclei with the same number of protons but a different number of neutrons are called isobars

Nuclei with the same number of neutrons but a different atomic number are called isotopes

Nuclei with the same mass number are called isotones

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