2. Atoms & Elements

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)?

Which isotope is represented by an atom with 2 protons and 4 neutrons?

How many protons and neutrons are present in one atom of 30^{14}Si?

How many neutrons are present in an atom of 226Ra?