2. Atoms & Elements

The lowest allowable energy state of an atom is called its:

In chemistry, when a chemist refers to the smallest unit of an element that retains the properties of that element, what is being defined?

Which of the following correctly defines one of the components of an atom?

Which of the following best describes an element?

Where is most of the mass of an atom located?

What is the atomic number of carbon?

Which of the following determines the atomic number of an element?

An Fe^{2+} ion has a mass number of 56. How many neutrons are present in a single Fe^{2+} atom?

How many protons does an atom of lithium have?

Which subatomic particle determines the identity of an element?

Which pair of elements has atomic numbers that add up to 200?

Which of the following is an element?

Which of the following substances has a molecule as its smallest representative particle?

How many protons are present in a neutral atom of fluorine?

In an atom, where are the electrons most likely to be found?