Question

1.How can we determine the atomic mass of an element which possess isotopic
forms ?​

Answer 1

• Neutral atoms of each element contain an equal number of protons and electrons.

• The number of protons determines an element’s atomic number and is used to distinguish one element from another.

• The number of neutrons is variable, resulting in isotopes, which are different forms of the same atom that vary only in the number of neutrons they possess.

• Together, the number of protons and the number of neutrons determine an element’s mass number.

• Since an element’s isotopes have slightly different mass numbers, the atomic mass is calculated by obtaining the mean of the mass numbers for its isotopes.

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