Groups of the periodic table

Front

What are the characteristics of Group 18 elements?

Back

Group 18 elements, also known as noble gases, are colorless, odorless, and tasteless gases at room temperature. They have full valence electron shells, making them very stable and unreactive.

Front

What is the atomic number of potassium (K)?

Back

The atomic number of potassium (K) is 19.

Front

Which group contains the most reactive nonmetals?

Back

The halogens (Group 17) are the most reactive nonmetals.

Front

What is a common property of alkali metals?

Back

Alkali metals (Group 1) have one valence electron that is easily lost, making them highly reactive.

Front

What is the typical state of noble gases at room temperature?

Back

Noble gases are typically gases at room temperature.

Front

What is the significance of valence electrons in chemical reactivity?

Back

Valence electrons determine how an element reacts with others; elements with fewer valence electrons tend to be more reactive.

Front

What is the general trend in reactivity for alkali metals down the group?

Back

Reactivity increases down the group for alkali metals.

Front

What is the appearance of aluminum at room temperature?

Back

Aluminum is a shiny, gray-colored solid at room temperature.

Front

What is the main reason for the reactivity of halogens?

Back

Halogens are highly reactive because they have seven valence electrons and need one more to achieve a full outer shell.

Front

What type of charge do alkali metals typically form?

Back

Alkali metals typically form +1 charges when they lose their one valence electron.