Ionisation And Shells

Question 0

Definition of atomic charge

Answer 0

Amount of protons (total charge)

Question 1

Definition of first ionisation energy

Answer 1

The amount of energy required to remove one electron from each atom IN one mole of gaseous atoms to form one mole of gaseous 1+ ions

Question 2

How does atomic radius affect IE

Answer 2

The larger the AR the increased distance of the outer e- from nuclear, decreased nuclear attraction –> lower IE required

Question 3

How does nuclear charge affect IE

Answer 3

The more proton the GREATER the nuclear charge, the GREATER the nuclear attraction, GREATER IE

Question 4

How does electron shielding and screening affect IE

Answer 4

Inner shells REPEL outer shells
MORE shells, increased shielding, less nuclear attraction
Lower IE

Question 5

IE down periods

Answer 5

Decreases:
Atomic radius increases, less NA
Electron shielding increases, more repulsion

Question 6

IE across periods

Answer 6

Atomic radius decreases (more +’s more pulling force, atom pulled in)
Nuclear chArge increases-more p

Question 7

IE in successive IE

Answer 7

Increases as more energy is required to remove an electron from an ION than atom

Question 8

What’s a shell and orbital

Answer 8

Shell- a group of atomic orbitals

Atomic orbitals- a region within an atom that can hold up to 2 electrons

Question 9

4th ionisation of chlorine

Answer 9

Cl 3+(g)—-> Cl 4+ + e-