Isotopes and Atomic Structure Flashcard

Front

What is an isotope?

Back

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

Front

How many protons does Nitrogen-15 have?

Back

7

Front

What does the 'cloud' in the electron cloud model represent?

Back

The location where electrons are likely to be found.

Front

What do isotopes of the same element have in common?

Back

They have the same number of protons.

Front

What is the atomic mass of chlorine with isotopes 35Cl and 37Cl?

Back

Approximately 35.48.

Front

Rank the following in order of increasing atomic radius: F, K, Br.

Back

Co < Fr < Ca.

Front

What is the atomic number of an element?

Back

The atomic number is the number of protons in the nucleus of an atom.

Front

What is the significance of neutrons in an atom?

Back

Neutrons contribute to the atomic mass and stability of the nucleus.

Front

How do you determine the number of neutrons in an isotope?

Back

Subtract the atomic number from the mass number.

Front

What is the mass number of an atom?

Back

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