Topic 7- Periodicity Flashcards
What are the four blocks on the periodic table?
What are groups on the periodic table?
What is the same about elements in the same group?
What are the elements usually numbered from?
What happens to metals as you go down the group?
What happens to non-metals as you go up the group?
S-block; D-block; P-block; and F-block
Vertical column of elements
Same number of electrons in outer main shell
1-7
Metals get more reactive as go down
Non-metals more reactive as go up.
What are periods on the periodic table?
What is the same about elements in the same period?
What trends are there between elements in the same period?
What is the definition of atomic radii?
What happens to atomic radii across the period?
What happens to atomic radii down the group?
Horizontal rows
Electrons in same main level
Trends in physical properties
Half the distance between the centre of the pairs of atoms
Decreases across the period
Gets larger down the group.
What are the structures of the following elements in Period 3:
Na
Mg
Al
Si
P
S
Cl
Ar
Metallic lattice
Metallic lattice
Metallic lattice
Macro Molecular (Giant Covalent Structure)
Simple Covalent (molecular)
Simple Covalent (molecular)
Simple Covalent (molecular)
Mono-atomic.
What are the forces of attraction broken when the solid melts of the following Period 3 elements:
Na
Mg
Al
Si
P
S
Cl
Ar
Metallic bonds
Metallic bonds
Metallic bonds
Covalent
Covalent
Covalent
Van der Waals
Van der Waals.
