Atom Builder (Isotopes & Ions)
Build atoms from protons, neutrons and electrons and see the element, isotope and charge.
Element–
Isotope–
Mass number0
Charge0
Type–
What you can learn
- The number of protons (atomic number) decides which element it is.
- Changing neutrons makes a different isotope of the same element.
- Changing electrons makes an ion: more electrons gives a negative charge, fewer gives positive.
Frequently asked questions
What is the difference between an isotope and an ion?
Isotopes have the same protons but different neutrons. Ions have the same protons but a different number of electrons, so they carry a charge.
How do you find the mass number?
Add the protons and neutrons in the nucleus. Electrons are so light they are ignored.