2. Atoms & Elements

Boron has two naturally occurring isotopes

Which of the following is closest to the atomic mass of platinum (Pt)?

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

Which of the following is closest to the atomic mass of titanium (Ti)?

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

Which property of an element is determined by adding the number of protons and the number of neutrons?

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?