Bohr Models & Lewis Dot Diagrams

Front

What is a Bohr model?

Back

A Bohr model is a diagram that represents the arrangement of electrons in an atom, showing energy levels and the number of electrons in each level.

Front

How many electrons can the first energy level hold?

Back

The first energy level can hold a maximum of 2 electrons.

Front

How many electrons can the second energy level hold?

Back

The second energy level can hold a maximum of 8 electrons.

Front

What is a Lewis dot diagram?

Back

A Lewis dot diagram is a representation of an atom that shows its valence electrons as dots around the element's symbol.

Front

What are valence electrons?

Back

Valence electrons are the electrons in the outermost energy level of an atom that are involved in chemical bonding.

Front

How many valence electrons does sodium (Na) have?

Back

Sodium has 1 valence electron.

Front

What is the significance of the periodic table's groups?

Back

Groups in the periodic table are vertical columns that contain elements with similar chemical properties and the same number of valence electrons.

Front

What is the significance of the periodic table's periods?

Back

Periods are horizontal rows in the periodic table that indicate the number of energy levels in the atoms of the elements.

Front

Do hydrogen (H) and helium (He) have the same number of energy levels?

Back

Yes, both hydrogen and helium have 1 energy level.

Front

Do potassium (K) and krypton (Kr) have the same number of energy levels?

Back

Yes, both potassium and krypton have 4 energy levels.