Flashcard 1 Unit 2: Bohr Models

Front

What is a Bohr Model?

Back

A Bohr Model is a diagram that represents the structure of an atom, showing electrons in circular orbits around the nucleus, which contains protons and neutrons.

Front

What does the atomic number represent?

Back

The atomic number represents the number of protons in the nucleus of an atom, which determines the element's identity.

Front

What is a mass number?

Back

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

Front

What are noble gases?

Back

Noble gases are elements in Group 18 of the periodic table, known for their lack of reactivity due to having a full valence shell.

Front

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

Back

To find the number of neutrons, subtract the atomic number from the mass number.

Front

What is the significance of electron shells in the Bohr Model?

Back

Electron shells represent the energy levels where electrons are likely to be found, with each shell holding a specific maximum number of electrons.

Front

What element has the atomic number 4?

Back

Beryllium.

Front

What is the electron configuration of Aluminum (atomic number 13)?

Back

1s² 2s² 2p⁶ 3s² 3p¹.

Front

What is the maximum number of electrons in the second shell?

Back

The maximum number of electrons in the second shell is 8.

Front

What is the relationship between groups and periods in the periodic table?

Back

Groups are vertical columns that share similar chemical properties, while periods are horizontal rows that indicate the number of electron shells.