Question : What is the atomic mass of sodium?
Option 1: 32
Option 2: 40
Option 3: 23
Option 4: 12
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Correct Answer: 23
Solution : The correct option is 23 .
The atomic mass of sodium is approximately 22.99 atomic mass units (u) or grams per mole (g/mol). This value is often rounded to 23 g/mol for practical purposes in chemistry. Isotopes are atoms of the same element with different numbers of neutrons. Sodium has two stable isotopes, 23 Na and 24 Na, with abundances of approximately 100% and trace amounts, respectively.
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