Question

Which of the following are present in an atom with atomic number $82$ and mass number $208$?

• A. $82$ protons and $82$ electrons
• B. $82$ protons and $82$ neutrons
• C. $82$ protons, $82$ electrons and $126$ neutrons
• D. $82$ neutrons, $126$ protons and $126$ electrons

Answer 1

Answer: (C)

$82$ protons, $82$ electrons and $126$ neutrons

8282 protons, 8282 electrons and 126126 neutrons are present in an atom with atomic number 82 and mass number 208.