C2 - The Periodic Table

Question 1

What does the group no. represent?

Answer 1

no. of electrons in outer shell

Question 2

What does the period no. represent?

Answer 2

no. of energy levels in atom

Question 3

How did Newland’s arrange elements in his periodic table?

Answer 3

chemical properties in repeating patterns of 8 called octaves

Question 4

What was the downisde to organising his table in octaves?

Answer 4

pattern stopped repeating quite quickly

Question 5

What 2 things were missing from Newland’s periodic table?

Answer 5

noble gases & gaps for undiscovered elements

Question 6

How did Mendeleev similarly arrange the elements in his periodic table?

Answer 6

masses & chemical property

Question 7

What was missing from Mendeleev’s table?

Answer 7

noble gases

Question 8

Why did Mendeleev’s table become more widely accepted?

Answer 8

left gaps for undiscov. elements & when noble gases were discovered could slot onto end without disrupting anyth.