10. How many protons are in an element with an atomic number of 6 and a mass number of 12?
A 18
B 12
C 10
D 6

d-6

The element carbon (C) has an atomic number of 6, which means that all neutral carbon atoms contain 6 protons and 6 electrons. In a typical sample of carbon-containing material, 98.89% of the carbon atoms also contain 6 neutrons, so each has a mass number of 12

Explanation:

Protons and neutrons are always equal The element here is a Carbon molecule. The answer here is D 6

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