2. Atoms & Elements

Which of the following is closest to the atomic mass of lead (Pb)?

Given the periodic table box for carbon below, which value represents the atomic mass?C612.01

Knowing the atomic mass of an element allows inferences about which of the following?

Which of the following best describes the difference between atomic number and atomic mass?

How is an atomic mass unit (amu) defined?

What distinguishes one element from another in terms of atomic structure?

How many protons are present in an atom of krypton?

Which of the following is the atomic mass of fluorine?

Which subatomic particles primarily contribute to the atomic mass of an atom?

Which element has an atomic mass of 106.42?

What is the average atomic mass of platinum (Pt) as listed on the periodic table?

Which of the following is the atomic mass of arsenic (As)?

In the nuclear fission reaction n + 235U → 92Kr + 141Ba + 3n, which of the following is the atomic mass (x) of krypton (Kr) produced?

Which of the following best defines one atomic mass unit (amu)?

Which number on the periodic table represents the atomic mass of an element?