What is the Atomic Mass of Sodium?
Atomic Mass of Sodium is .
A) 21
B) 22
C) 23
D) 24
Answer: The atomic mass of Sodium is 23 amu. Therefore, the correct option is C.
Explanation:
Atomic Mass of any substance is the sum of the number of protons and the number of neutrons in the nucleus of that atom.
For Sodium,
- Number of Protons = 11
- Number of Neutrons = 12
Thus,
Atomic Mass of Sodium = 11 + 12 = 23
In absolute terms, the average atomic mass of sodium is 22.989769 amu. It is calculated taking into account all the isotopes of Sodium.
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