a radioactive nuclide has 53 protons and 78 neutrons. which is the symbol of this nuclide?\n53 78 i\n78 53…
a radioactive nuclide has 53 protons and 78 neutrons. which is the symbol of this nuclide?\n53 78 i\n78 53 pt\n131 78 pt\n131 53 i
Answer
Explanation:
Step1: Identify the element
The atomic number ($Z$) is equal to the number of protons. Here, $Z = 53$, and the element with atomic number 53 is iodine (I).
Step2: Calculate the mass number
The mass number ($A$) is the sum of the number of protons and neutrons. So, $A=53 + 78=131$.
Step3: Write the nuclide symbol
The nuclide symbol is written as $^{A}{Z}X$, where $X$ is the chemical symbol of the element. For iodine with $A = 131$ and $Z = 53$, the symbol is $^{131}{53}I$.
Answer:
$^{131}_{53}I$ (corresponding to the fourth - option in the multiple - choice list)