The Periodic Table Flashcards Preview

AS Chemistry > The Periodic Table > Flashcards

Flashcards in The Periodic Table Deck (15)
Loading flashcards...
1

Periodic table

Arrangement reveals trends
Position of elements in table, linked to physical and chemical properties

2

Atomic number

In order of increasing atomic number
Number of protons in an atom

3

Groups

Vertical columns
Same number of outer shell electrons, in each group
Similar properties

4

Periods

Horizontal rows
No of the period gives no of highest energy electron shells in an atom

5

Trends across a period

Each period starts with an electron in a new highest energy shell
In each period, s, p are filled in the same way

6

Trends down a group

Elements in the same group have same no of electrons in each sub shell
Similar chemical reactions

7

Blocks

Elements in the periodic table are divided into blocks, corresponding to highest energy sub shell
4 distinctive blocks, s, p, d, f

8

Group number 1

Alkali metals

9

Group number 2

Alkali earth metals

10

Group number 3-12

Transition elements

11

Group number 5, 15

Pnictogens

12

Group number 6, 16

Chalcogens

13

Group number 7, 17

Halogens

14

Group number 0, 18

Noble gases

15

Periodicity

The repeating trend in properties of the elements