Answer:
12protons, 12neutrons, and 12electrons.
Explanation:
An element X- 24 is Magnesium, in its elemental form, it consists of 12 electrons and 12 protons. Magnesium's average atomic mass is 24.305 amu. Isotope is known as a compound with the same number of electrons and protons but a different number of neutrons.
The three most natural isotopes of Magnesium are Mg-24 (12 neutrons) is 78.9%, Mg-25 (13 neutrons) is 10% and Mg-26 (14 neutrons) is 11.01%, all found in nature. So, about 79% of all Magnesium atoms consist of 12 protons, 12 neutrons, and 12 electrons.
