Compared to protons, neutrons have...

What is the mass number of this atom?

What is the atomic number of this atom?

Why isn't it possible to have an isotope of Cadmium-112.41?

An iron nail with a mass of 2.3 g sits in a chamber of oxygen until rust (iron oxide) forms. After the reaction, the rusted nail has a mass of 2.8 g. What is the percent composition of iron in this rust?

In a neutral atom, what 2 subatomic particles are equal to the atomic number?

An iron nail with a mass of 2.3 g sits in a chamber of oxygen until rust (iron oxide) forms. After the reaction, the rusted nail has a mass of 2.8 g. What mass of oxygen must have reacted?

What element is atom A?

Which atom is an isotope of atom B?

J.J. Thomson's work with the cathode ray tube led him to discover...

Is this atom neutral? Why?

What is the mass number of atom B?

What element is pictured here?