Difficulty: Medium
Average Score: 69%
Entry Exam
Which element has 13 protons, 13 electrons, and 14 neutrons?
Correct answer
C
Rationale
The element with 13 protons is Aluminum (Al), as the atomic number of an element is determined by the number of protons. The total number of protons and neutrons in an element's nucleus is known as the mass number. Given that the mystery element has 13 protons and 14 neutrons, it matches the characteristics of Aluminum, making it the correct answer.