an atom of $^{118}$xe contains ______ neutrons.\n54\n172\n64\n110\n118\nquestion 20 1 pts\npredict the…

an atom of $^{118}$xe contains ______ neutrons.\n54\n172\n64\n110\n118\nquestion 20 1 pts\npredict the charge of the most stable ion of aluminum.\n3+\n1+\n3-\n2+\n1-

an atom of $^{118}$xe contains ______ neutrons.\n54\n172\n64\n110\n118\nquestion 20 1 pts\npredict the charge of the most stable ion of aluminum.\n3+\n1+\n3-\n2+\n1-

Answer

Explanation:

Step1: Recall atomic number of Xe

The atomic number of xenon (Xe) is 54.

Step2: Use neutron - proton relationship

The mass number is 118. Neutrons = Mass number - Atomic number. So, neutrons = 118 - 54 = 64.

Step3: Recall electron - loss/gain for aluminum

Aluminum (Al) has an atomic number of 13. Its electron configuration is [Ne]3s²3p¹. It loses 3 electrons to achieve a stable noble - gas configuration. So, it forms a 3+ ion.

Answer:

First question: C. 64 Second question: A. 3+