Flashcard Isotopes - Mrs. Chacon

Front

What is an isotope?

Back

Isotopes are variants of a particular chemical element that have the same number of protons but different numbers of neutrons.

Front

How many protons does nitrogen-15 have?

Back

7 protons.

Front

How many neutrons does nitrogen-15 have?

Back

8 neutrons.

Front

What is the mass number of an isotope?

Back

The mass number is the total number of protons and neutrons in the nucleus of an atom.

Front

What is the mass number of hydrogen-3?

Back

3.

Front

What is the mass number of iron-58?

Back

58.

Front

What does the letter 'A' represent in isotope notation?

Back

A represents the mass number.

Front

What does the letter 'Z' represent in isotope notation?

Back

Z represents the atomic number.

Front

How can isotopes be written in isotope notation?

Back

Isotope notation is written as \( _Z^A \text{Element} \), where A is the mass number and Z is the atomic number.

Front

What is the atomic number of nitrogen?

Back

The atomic number of nitrogen is 7.