'Electron Structure' (Training for ionisation energies)

Rows of the periodic table are called _______

Elements in the SECOND period have their OUTER electrons in the __________ SHELL

• 1st

• 2nd

• 3rd

• 4th

Aluminium is in GROUP __, therefore it has __ electrons in it's outer shell

• 1

• 2

• 3

• 4

• 5

Aluminium is in GROUP __, therefore it has CATIONS with a charge of

Answer explanation

the group number of a metal tells us the charge of it's cations

(...and the number of electrons that the metal donates to the giang metallic lattice)

Carbon is in GROUP 4.

How many electrons are in the outer shell of CARBON?

Answer explanation

the group number tells us how many electrons in the outer shell

How many electrons can be held in the 2nd shell?

Answer explanation

2e^– in the 2s subshell

6e^– in the 2p subshell

= 8e^– in the 2nd shell

How many ELECTRONS can fit in the first three SHELLS of an atom?

• 2,8,8

• 1,3,5

• 2,8,10

• 2,8,18

Answer explanation

Remember in A Level, the 3rd shell also contains an extra 10 possible electrons because of the d-block

How many electrons are in the outer shell of a SULFUR ATOM

Answer explanation

the group number tells us how many electrons in the outer shell

Flourine is in GROUP 7.

How many electrons can a FLOURINE ATOM lose before its outer shell is empty

Answer explanation

the group number tells us how many electrons in the outer shell

to lose those electrons, you can think of moving backwards (<--) across the period (row)

Neon is a noble gas.

How many electrons can a NEON ATOM lose before its outer shell is empty

Answer explanation

The outer electrons can be removed one-by-one

until we get to the shell SHELL UNDERNEATH