atomic structure and the periodic table

Where are the protons and neutrons found

Nucleus

Where are the electrons found

Shells

What is the charge of protons

1+

What is the charge of neutrons

0

What is the charge of electrons

1-

What is the relative mass of a proton

1

What is the relative mass of a neutron

1

What is the relative mass of an electron

Negligible, 0

What does the atomic number tell us

How many protons

What does the mass number tell us

How many protons and neutrons

What is an isotope

Two of the same atom which have the same number of protons and electrons but a different number of neutrons

How to find the relative atomic mass

Mr times abundancy add mr times abundency divided by 100

What are the groups

On the top (the columns)

What does the group number tell us

The number of electrons in the outer shell

What are the periods

Down the side (rows)

What does the period number tell us

The number of shells

What is the name for elements in group 7

Halogens

What are the name for the elements in group 8/0

Noble gases

Where do you find metals

Right and above the staircase

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

They have the same amount of electrons in their outer shell

Why don’t elements in group 8/0 react

Because they have a full outer shell of electrons