The Modern Periodic Table

Question 1

What is the modern periodic table based on?

Answer 1

Electronic structure

Question 2

Once subatomic particles were discovered, what change in the periodic table?

Answer 2

The elements were then ordered by atomic number and all elements were put into groups

Question 3

Using the electron arrangement, you can predict the element’s…

Answer 3

chemical properties

Question 4

Electrons in an atom are set out in [ ] which each correspond to an [ ] level

Answer 4

Shells

Energy`

Question 5

Apart from transition metals, elements in the same group have the [ ] in their highest occupied energy level

Answer 5

same number of electrons

Question 6

The group number is equal to…

Answer 6

… the number of electrons in the highest occupied energy level.

Question 7

The further from the nucleus the electron is, the [ ] the attraction

Answer 7

less

Question 8

What is shielding?

Answer 8

Where the attraction of the nucleus is even less when there are a lot of inner electrons. Inner electrons ‘get in the way’ of the nuclear charge, reducing the attraction.

Question 9

The combination of increased distance and shielding means that an electron in a higher energy level is [ ] easily lost because there’s [ ] attraction from the [ ] holding it in place. For the same reason, it is [ ] to gain electrons (less attraction)

Answer 9

more
less
nucleus
harder

Question 10

Group 1 metals get [ ] as you go down the group

Answer 10

more reactive

Question 11

[ ] get less reactive going down the group

Answer 11

Group 7 elements