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Question

What can you infer from the given symbol- 12Mg?


A

The atomic number of magnesium is 12.

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B

One atom of magnesium contains 12 protons in its nucleus.

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C

One atom of magnesium contains 12 electrons in its shells.

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D

All the above.

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Solution

The correct option is D

All the above.


The symbol 12Mg refers to all the options-

The atomic number of magnesium is 12.

One atom of magnesium contains 12 protons in its nucleus.

One atom of magnesium contains 12 electrons in its shells


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