2. Atoms & Elements

Which element has 32 protons in its nucleus?

Which statement correctly compares the atomic mass and atomic number of helium?

In an atom, where are neutrons located?

A neutral atom of calcium has how many protons and how many electrons?

Which of the following is the smallest unit of an element that retains all the chemical properties of that element?

How many protons are present in an atom of radon (Rn)?

How many electrons are present in a neutral carbon atom?

How many protons are present in an atom of aluminum-28?

Within an atom, electrons:

Which of the following is considered the basic unit of matter?

Which of the following is the mass number of a typical helium atom?

Which subatomic particles contribute to the net charge of an atom, and how does each affect the net charge?

Where are electrons located within an atom?

How many neutrons are present in a neutral atom of phosphorus-31?

What is the overall charge of an atom that contains 15 protons, 16 neutrons, and 17 electrons?