Front

What is the name of group number 2 in the periodic table?

Back

Alkaline earth metals.

Front

Where are the metalloids located on the periodic table?

Back

They are found along the stair-step line (diagonal) on the periodic table.

Front

What group number are the halogens found in?

Back

Group 17 (7A).

Front

Which element has similar chemical properties as sodium but has 7 energy levels?

Back

Francium (Fr).

Front

What does the periodic law state about the arrangement of elements?

Back

Elements are arranged according to their atomic numbers so that elements with similar chemical properties are in the same column and properties repeat periodically.

Front

What are the main characteristics of alkaline earth metals?

Back

They are shiny, silvery-white metals that are somewhat reactive, especially with water.

Front

What are metalloids and why are they important?

Back

Metalloids have properties of both metals and nonmetals, making them useful in semiconductors and other applications.

Front

What are the properties of halogens?

Back

Halogens are highly reactive nonmetals, known for forming salts with metals.

Front

What is the significance of atomic number in the periodic table?

Back

The atomic number determines the identity of an element and its position in the periodic table.

Front

How does the periodic table organize elements?

Back

Elements are organized by increasing atomic number and grouped by similar chemical properties.