Trends Flashcards

1
Q

What happens to the properties of group 7 you go down the group?

A

Atomic radius increases
Ionisation decreases
Reactivity decreases
Oxidising power increases

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2
Q

What are all the elements of group 2?

A

Beryllium, Be
Magnesium, Mg
Calcium, Ca
Strontium, Sr
Barium, Ba
Radium, Ra

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3
Q

How does group 2 show similar chemical and physical properties?

A

Group 2 elements show similar chemical and physical properties as they they have two electrons in their outer shell

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4
Q

How do elements in group 2 react?

A

They react by losing one valence electron to form positively charged cation and in losing these electrons they ionises.

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5
Q

How can you determine the reactivity of an element?

A

You can determine the reactivity of an element by how easy it ionises. The easier, the more reactive

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6
Q

What happens to the properties of group 2 when you go down the group?

A

Atomic radius increases
Easier ionisation
More reactive

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7
Q

What are diatomic molecules?

A

Diatomic molecules are molecules composed only TWO atoms of the same or different chemical elements

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8
Q

What elements in group 7 exist as diatomic molecules?

A

Flourine, F
Chlorine, Cl
Bromine, Br
Iodine, I

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