Lesson: Isotopes Physics • 9th Grade
In this lesson, we will learn how to work out the number of protons, neutrons, and electrons an atom of an isotope has from its chemical symbol.
Sample Question Videos
An uncharged atom has an atomic number of 6 and a mass number of 11.
How many protons does that atom have?
How many neutrons does that atom have?
How many electrons does that atom have?
A platinum atom has the chemical symbol
How many protons does the platinum atom have?
How many neutrons does the platinum atom have?
The chemical element symbol for titanium-48 is .
What is the atomic number of titanium?
What is the mass number of titanium?