2. Atoms & Elements

Which of the following is closest to the atomic mass of neon (Ne)?

Which one of the following has the largest atomic mass?

Which of the following is closest to the atomic mass of sodium (Na)?

Which of the following is closest to the atomic mass of neon (Ne)?

Which subatomic particle correctly determines an atom's identity and chemical properties?

Which element has the lowest atomic mass?

Who was the first scientist to systematically determine atomic weights for elements?

What is the approximate atomic mass (in atomic mass units, u) of an atom that contains 26 protons and 30 neutrons?

What is the mass number of a potassium (K) atom that has 20 neutrons?

Which property determines an atom's identity as the element phosphorus?

Which property determines the identity of the element mercury?

Which of the following is the atomic mass of gold (Au)?

Which of the following is closest to the atomic mass of oxygen (O) as listed on the periodic table?

Which of the following is closest to the atomic mass of oxygen?

What is the approximate atomic mass (in atomic mass units, u) of an atom that contains 26 protons, 26 electrons, and 19 neutrons?