Question

9 Give two points of difference between: Atomic number -Mass number 0
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Answer 1

The major difference between atomic number and mass number is that the atomic number states the number of protons present in an atom whereas, the mass number indicates the total of the number of protons and the number neutrons present in an atom

Answer 2

The differences between Atomic number and Mass number are as follows.

• Atomic number is equal to the total number of protons or electrons present in an atom. Mass number can be found by the total protons and neutrons in the nucleus of an atom.
• Atomic number can be represented by the letter 'Z'. Mass number is denoted by 'A'.
• The atomic number of an element can give its structure and properties. The mass number cannot determine the shape of the element.
• Isotopes of an element share the same atomic number. The mass number can be used to differentiate the isotopes of an element.