Question

1. The atomic number of an element is 23 and its mass number is 56. a. How many protons and electrons does an atom of this element have? b. How many neutrons does this atom have?

Answer 1

There are 23 protons and 23 electrons. We know this because atomic number denotes the number of protons and also electrons. There are 56 - 23 = 33 neutrons because atomic mass denotes the total number of protons and neutrons.