2. Atoms & Elements

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?

What is the average mass of a single silicon (Si) atom in grams?

Which has a greater mass: one mole of carbon-12 atoms or one mole of oxygen-16 atoms?

Which of the following is the number of protons in a thorium (Th) atom?

Which is the first element in the periodic table with an atomic mass greater than 100?

Which term describes the weighted average mass of the isotopes of an element?

Which of the following is closest to the atomic mass of zinc (Zn)?

The atomic mass of an element is equal to the number of:

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