Question

12 (b) Carbon-12 has the symbol 6C. Write the symbol for an atom of element X​

Answer 1

According to the question, the chemical name of element X is sodium because its atomic number is 11. The Symbol of element X that is sodium is -\[Na\].

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Answer 2

Answer:

Carbon-12 (12C) is the more abundant of the two stable isotopes of carbon (carbon-13 being the other), amounting to 98.93% of element carbon on Earth;[1] its abundance is due to the triple-alpha process by which it is created in stars. Carbon-12 is of particular importance in its use as the standard from which atomic masses of all nuclides are measured, thus, its atomic mass is exactly 12 daltons by definition. Carbon-12 is composed of 6 protons, 6 neutrons, and 6 electrons.

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