Groups & Periods

Front

What is the atomic number of Lithium?

Back

3

Front

In which direction do periods on the periodic table go?

Back

Side to side

Front

How many electrons does Lithium have?

Back

3

Front

Which group on the periodic table contains elements with 1 valence electron?

Back

Group 1

Front

In which direction do groups on the periodic table go?

Back

Up and down

Front

What is a group in the context of the periodic table?

Back

A column of elements with similar properties.

Front

What is a period in the context of the periodic table?

Back

A row of elements that have the same number of electron shells.

Front

What do elements in the same group have in common?

Back

They have the same number of valence electrons.

Front

What is the significance of valence electrons?

Back

They determine how an element reacts chemically.

Front

How many total electrons can the first shell of an atom hold?

Back

2 electrons