An element X- 24 is a radioactive isotopes used to diagnose restricted blood circulation. How many electrons, protons and neutrons are there in this isotopes if its valency shell electronic is 3s^1?

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.

nacl or sodium chloride is an ionic compound. this is because an ionic compound pertains to a compound that consists of positively and negatively charged ions. in this case, na (sodium) has a tendency to lose one electron when it reacts with with other atoms, so the resulting sodium ion contains 11 protons and 10 electrons, thus making it positively charged (na+), when chlorine reacts, it usually gains one electron to form an ion called chloride, thus making it negatively charged ( since the ions are oppositely charged, they attract.