Physics, asked by AryanB790, 4 months ago

What is meant by atomic mass number? Explain how the atomic number and mass
number of sodium(Na) are 11 and 23 respectively.​

Answers

Answered by Anonymous
1

Answer:

The mass number is given at the top left of the elements symbol, for example, sodium has a mass number of 23. We know that the atomic number of sodium is 11. This tells us that sodium has 11 protons and because it is neutral it has 11 electrons.

Explanation:

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