2. Atoms & Elements

A nuclide is represented as 14C. How many protons and neutrons does this nuclide contain, and what is the element?

Which of the following best explains how boron-10 and boron-11 differ?

Two atoms that are isotopes of one another must have the same number of which subatomic particle?

Which isotope of iron has 30 neutrons?

Which of the following is the correct nuclear symbol for the isotope of silicon with a mass number of 29?

Why do all isotopes of an element have the same chemical properties?

How many neutrons are in an atom of carbon-12?

Which property of carbon-14 allows scientists to use it for dating dead organisms?

On another planet, the isotopes of titanium have different numbers of which subatomic particle?

How many neutrons does a typical carbon-12 atom have?

Bromine has an atomic number of 35. How many neutrons are present in the most abundant isotope of bromine?

Which of the following oxygen isotopes is the most abundant in nature?

Which of the following pairs of symbols represent atoms that are isotopes of each other?

How many neutrons are in an atom of lithium with an atomic mass of 7?

How many electrons are present in one atom of the isotope 13C?