Answer:
132 54Xe
Explanation:
From the question given above, the following were obtained:
Proton = 54
Neutron = 78
Atomic number =?
Atomic symbol =.?
Next, we shall determine the atomic number of the isotope. This can be obtained as follow:
Atomic number of an element is simply defined as the number of protons in the atom of the element.
Thus,
Atomic number = proton number
Proton = 54
Atomic number = proton number = 54
Atomic number = 54
Therefore, the atomic number of the isotope is 54
Next, we shall determine the mass number of the isotope. This can be obtained as follow:
Proton = 54
Neutron = 78
Mass number =.?
Mass number = Proton + Neutron
Mass number = 54 + 78
Mass number = 132
Therefore, the mass number of the isotope is 132.
From the calculations made above, the isotope have:
Atomic number = 54
Mass number = 132
Comparing the atomic number with those in the periodic table, the isotope is Xenon (Xe).
Thus, the atomic symbol for the isotope is 132 54Xe.
