They have different numbers of neutrons.
Yes; isotopes of the same element have the same atomic number but differ in their atomic masses.
The different mass numbers are due to different numbers of neutrons.
No element has this atomic number. All atomic numbers are whole numbers.
Isotopes have different numbers of electrons, but not different atomic numbers (numbers of protons) or they'd be different elements.
No. The atomic number of an element is determined by its number of protons. If two atoms have different numbers of protons, they have different atomic numbers and are different elements.
If a sample of an element contains atoms of different mass numbers, the name of the element followed by a hyphen and the mass number is the name of an isotope of the element.
The atomic number of the isotopes of an element is identical; the mass number is different.
Two isotopes of an element have the same atomic number (number of protons) but have different mass numbers (sum of protons and neutrons). This means that they will differ in the number of neutrons despite being the same element.
The isotopes of the same element has the same atomic number. But the mass number (atomic mass) is different.
The atomic number is identical for all the isotopes of the same chemical element.
First of all, an atom can not literally have either more than one mass number or more than one atomic number. Different atoms of the same element can have different mass numbers but the same atomic number because the atomic number is the defining characteristic of an element, but many elements have isotopes that have different numbers of neutrons in their nuclei and therefore different mass numbers: Mass numbers are the sum of the numbers of protons and neutrons in the nucleus.
No, the atomic number of an element can't change. Because, we can identify an element by its atomic number and atomic mass. and hence they have been arranged in the periodic table on the basis of their mass number and atomic mass so , it couldn't be changed. Every element has a fixed atomic number..