Question

Define the terms atomic number and mass number. Do all the atoms of an element have same mass number? What the atomir​

Answer 1

The number of protons determines an element's atomic number and is used to distinguish one element from another. ... Together, the number of protons and the number of neutrons determine an element's mass number.

All atoms of a chemical element have the same atomic number (number of protons in the nucleus) but may have different mass numbers (from having different numbers of neutrons in the nucleus). Atoms of an element with the same mass number make up an isotope of the element.

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Answer 2

Answer:

the total number of protons in an element is called atomic number

the total of protons and neutrons is called atomic mass

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