The Periodic Table - Arrangement of elements

Front

What is the periodic table?

Back

A method of classifying and arranging elements.

Front

How is the periodic table arranged?

Back

The elements are arranged in order of increasing atomic number. This places elements in vertical groups (columns) and horizontal periods (rows).

Elements in the same period have the same number of electron shells and elements in the same group have the same number of electrons in their outer shell.

Front

Where are metals and non-metals found in the periodic table?

Back

Metals make up most of the periodic table and are found towards the left of the table.

Non-metals are found towards the top right of the periodic table.

Front

How does metallic character change across a period?

Back

It decreases across the period.

Front

How does non-metallic character change across a period?

Back

It increases across the period.

Front

Why do elements in the same group have similar chemical properties?

Back

Chemical properties are determined by the number of electrons in the outer shell of an atom. Elements in the same group have the same number of electrons in their outer shell so they react in a similar way.

Front

How many electrons are in the outer shell of a group V element?

Back

Five

Front

What is the charge on group I and group II ions?

Back

Group I and group II elements are metals so they lose electrons to form positive ions.

Group I forms 1+ ions.

Group II forms 2+ ions.

Front

What is the charge on group VI and group VII ions?

Back

Group VI and group VII elements are non-metals so they gain electrons to form negative ions.

Group VI forms 2- ions.

Group VII forms 1- ions.

Front

Which group do lithium, sodium and potassium belong to?

Back

Group I