Group 7 Flashcards
1
Q
Explain the trend in boiling point of the halogens as you go down the group.
A
Boiling Point increases
• there more electrons
• More london forces
• More energy to required to break intermolecular forces
2
Q
Explain the Trend in reactivity aa you go down the group.
A
Reactivity Decreases • Increased atomic readius • Increased sheilding • Less realtive nucleur attraction • Harder to gain electron • Lower reactivity down the group
3
Q
What is chlorine used for?
A
To clean drinking water
4
Q
Give 1 adavtage and 1 disadvantage if usinv chlorine in water treatment.
A
Advantage - Chlorine kills harmful bacteria
Disadvantage - chlorinated hyrdocarbons can cause cancer
5
Q
What reacts with chlorine to make bleach?
A
cold, dilute aqueous sodium hydroxide
