2. Atoms & Elements

A potassium atom has a mass number of 37. What is the number of neutrons in this atom?

How many neutrons does a typical sodium (Na) atom have, given that its atomic number is 11 and its most common isotope has a mass number of 23?

Which of the following best explains how one isotope of an element differs from another?

How are isotopes of an element different from each other?

Deuterium is an isotope of hydrogen with a mass number of 2. Which of the following correctly describes a deuterium atom?

How many protons and neutrons are present in the isotope Cl-37?

Which term describes different forms of an element that have the same number of protons but different numbers of neutrons?

How many protons (p) and neutrons (n) are present in an atom of calcium-46?

How many electrons are present in a neutral atom of the isotope silicon-29?

Carbon-12 and carbon-13 are isotopes of carbon. Which of the following statements is correct?

How do isotopes of a given element differ from each other?

What is the atomic number of both isotopes of nitrogen?

Isotopes differ from each other in what way?

Lithium has 3 protons. How many neutrons are present in the isotope lithium-8?

How many neutrons are present in the isotope nitrogen-14 (N-14)?