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Atomic Mass and Atomic Mass Unit

What is the a...

Question

What is the atomic mass (u) of sodium?

A

22

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B

23

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C

23.5

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D

24

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Solution

The correct option is C 23
Sodium is a chemical element with the symbol $N a$ and atomic number $11$ . Atomic mass (u) of sodium = $23 u$ .
It is a soft, silvery-white, highly reactive metal.

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