C2.2.10 - Atomic Structure And The Periodic Table Flashcards Preview

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Flashcards in C2.2.10 - Atomic Structure And The Periodic Table Deck (11):
1

Who discovered argon?

Lord Rayleigh and William Ramsay

2

When was argon discovered?

1894

3

What did Mendeleev at first think?

All elements should be able to react with each other

4

What 6 elements did Ramsay discover?

Helium
Neon
Argon
Krypton
Xenon
Radon

5

What was different about the 6 elements Ramsay discovered?

They were all unreactive

6

What is the group of unreactive elements called?

Noble Gases
Group 0 (IUPAC group 18)

7

What do you need to remember to understand the patterns of chemical properties in the Periodic Table?

Elements are arranged in order of increasing atom number
The atomic number is the amount of protons in an atom
There are the same number of electrons and protons
The electronic structure of an element determines its chemical properties

8

Describe the elements in group 1

They are metals
They are very reactive
Their electronic structures end in 1
The ions formed in reactions is +1

9

Describe the elements in group 2

They are metals
They are reactive
Their electronic structures end in 2
The ions formed in a reaction is +2

10

Describe the elements in group 7

They are non-metal
They are very reactive
Their electronic structures end in 7
The ions formed in reactions are -1

11

Describe the elements in group 0

They are non-metal
They are unreactive
Their outer shells are full
They form no ions because they don’t react