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Question : The mass number of potassium is:
Option 1: 39
Option 2: 40
Option 3: 38
Option 4: 37

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Team Careers360 14th Jan, 2024

Answer (1)

Team Careers360 16th Jan, 2024

Correct Answer: 39

Solution : The correct option is 39 .

Since potassium (symbol K) has several isotopes, the mass number of potassium can change. Atoms of the same element that differ in their neutron counts but have the same number of protons, which characterises the elements, are called isotopes.

Potassium-39 (K-39) is the most prevalent isotope of potassium, containing 19 protons and 20 neutrons.

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