Two different atoms have six protons each and the same mass. however, one has a negative charge while the other has a positive charge. describe what each atomic structure could be, listing the possible number and location of all subatomic particles.

If mass is same it means the number of protons and neutrons are same

If the charge is positive or negative, it means the number of electrons are different

Let say the atomic number of element = A

The mass number is = M

The number of electrons in neutral atom = A

The number of electrons in negatively charged atom = A +1  [The number of protons and mass number will remains the same]

The number of electrons in positively charged atom = A -1  [The number of protons and mass number will remains the same]

Example :Cl-  and Cl+  

Both the atoms exhibit the same mass, thus, both the atoms comprises 6 number of neutrons, and both the atoms exhibit 6 number of protons. When one atom exhibits positive charge it signifies that there is 5 number of electrons, and when one atom exhibits a negative charge it signifies that it comprises 7 number of electrons. The carbon atom comprises 6 neutrons and 6 protons. Thus, the two different atoms could be 6C+ and 6C-, and of all the subatomic particles, the protons and neutrons are situated in the nucleus, and the electrons are situated around the nucleus.

the answer is option a.