Show:
Vocabulary
Atomic Number
Symbols
Valence Electrons
Trends
100

Vertical columns

What is a Group?

100

Hydrogen

1
100

Helium

He

100

Hydrogen

1

100

Valence Electrons ___ from left to right

Increases

200

Horizontal Rows

What is a Period

200

Oxygen

8
200

Sodium

Na

200

Carbon

4
200

Valence Electrons ___ from top to bottom

Stay the same (Excluding Transition metals)

300

1st vertical column 

Alkali Metals

300

Neon

10

300

Iron

Fe

300

Oxygen

6

300

Atomic Numbers __ from bottom right to top left

Decrease (Kind of excluding Helium)

400

17th vertical column

Halogens

400

Sodium

11

400

Gold

Au

400

Bromine

7

400

(Periodic) Ionisation energy

Increases as you move right

500

diagonal section after the transition metals

Metaloids

500

Potassium

19
500

Tungsten

W

500

Helium

2

500

(Group) Ionisation energy

Decreases the further down in a group