Group 7 Flashcards
Do the elements get darker or lighter as you go down group seven?
Darker.
What happens to volatility as you go down group seven?
It decreases.
Why does volatility decreases as you go down group seven?
The diatomic molecules have more electrons and so have greater van der waals forces.
Does melting and boiling point of group seven increase or decrease down the group?
Increases.
Does electronegativity increase or decrease down group seven?
Decreases.
Does the reactivity of halogens increase or decrease down a group?
Decrease.
How can the reactivity of halogens decreasing down a group be shown?
By the way the elements react with hydrogen gas.
How does fluorine react?
Instantly.
How does Chlorine react?
Slowly in the dark but explosively when expose to UV light.
How does bromine react?
Slowly however it requires heat.
How does iodine react?
It does not fully react as an equilibrium is created, even when heated strongly.
Does the oxidising power of the halogens increase or decrease down the grouo?
Decreases.
