use the periodic table to answer the questions below. write the atomic symbol (including the atomic number)…

use the periodic table to answer the questions below. write the atomic symbol (including the atomic number) for an isotope with 54 protons and 78 neutrons. write the answer in the form $_z^a x$ using the atomic symbol button in the toolbar, where $a$ is the mass number, $z$ is the atomic number, and $x$ is the chemical symbol for the unknown element. provide your answer below:

use the periodic table to answer the questions below. write the atomic symbol (including the atomic number) for an isotope with 54 protons and 78 neutrons. write the answer in the form $_z^a x$ using the atomic symbol button in the toolbar, where $a$ is the mass number, $z$ is the atomic number, and $x$ is the chemical symbol for the unknown element. provide your answer below:

Answer

Explanation:

Step1: Determine the atomic number

The number of protons is equal to the atomic number. Given 54 protons, so $Z = 54$.

Step2: Determine the mass number

The mass number $A$ is the sum of protons and neutrons. So $A=54 + 78=132$.

Step3: Identify the element

Looking up atomic number 54 on the periodic - table, the element is Xenon with symbol $Xe$.

Answer:

$_{54}^{132}Xe$