Basics of the Periodic Table

Front

What is the atomic number of an element?

Back

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

Front

What are noble gases?

Back

Noble gases are a group of elements in Group 18 of the periodic table that are characterized by their lack of reactivity due to having a full valence shell.

Front

What is a diatomic molecule?

Back

A diatomic molecule consists of two atoms, which can be of the same or different elements, such as O2 (oxygen) or HCl (hydrochloric acid).

Front

What are halogens?

Back

Halogens are the elements found in Group 17 of the periodic table, known for being highly reactive and forming salts when combined with metals.

Front

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

Back

The periodic table is arranged by increasing atomic number, which reflects the periodic trends in element properties.

Front

What is the difference between metals and nonmetals?

Back

Metals are typically shiny, conductive, and malleable, while nonmetals are usually dull, insulative, and brittle.

Front

What is the role of electrons in chemical bonding?

Back

Electrons, particularly valence electrons, are involved in forming chemical bonds between atoms, determining how elements interact.

Front

What is an alkali metal?

Back

Alkali metals are the elements in Group 1 of the periodic table, known for being highly reactive, especially with water.

Front

What is the periodic law?

Back

The periodic law states that the properties of elements are a periodic function of their atomic numbers.

Front

What is a chemical family?

Back

A chemical family, or group, consists of elements that share similar properties and are located in the same vertical column of the periodic table.