Question

1. If element X has 43 protons, how many electrons does it have?

2. An element's atomic number is 84. How many protons would an atom of this element have?

3. How many neutrons does element X have if its atomic number is 54 and its mass number is 160?

Answer 1

1. 43 electrons because protons and electrons are the same as the atomic number.

2. 84 protons again same as the atomic number

3. 106