Group 7

No description yet. This curated deck is ready for daily study.

Total cards: 16•Content version: v4•Public deck•Updated: 8/1/2026

Card preview (16)

Front (Question)

Properties

Back (Answer)

• diatomic • single covalent bond • form -1 ions

Front (Question)

Reactivity down the group

Back (Answer)

• decreases • atomic radius increase • shielding increase • less readily reduced • worse oxidising agent

Front (Question)

Mpt and bpt down the group

Back (Answer)

• increases • increased amount of electrons • increased dipole-dipole forces • more energy to overcome

Front (Question)

Displacement reaction

Back (Answer)

• Cl2 displaces Br- and I- • Br2 displaces I- • I2 has no reaction • Br2 is yellow d

Front (Question)

Br2 in aqueous solution

Back (Answer)

yellow

Front (Question)

Br2 in hexane

Back (Answer)

orange

Front (Question)

I2 in aqueous solution

Back (Answer)

orange-brown

Front (Question)

I2 in hexane

Back (Answer)

violet

Front (Question)

Disproportionation

Back (Answer)

element is simultaneously reduced and oxidised

#10

Front (Question)

Chlorine and water

Back (Answer)

Cl2(g) + H2O(l) ⇌ HCl(aq) + HClO(aq)

#11

Front (Question)

Chlorate ionisation

Back (Answer)

HClO + H2O ⇌ClO- + H3O+

#12

Front (Question)

Chlorate ions

Back (Answer)

ClO- kills bacteria

#13

Front (Question)

Chlorine and sodium hydroxide

Back (Answer)

2NaOH(aq) + Cl2(g) -> NaClO + NaCl + H2O

#14

Front (Question)

Sodium chlorate(I)

Back (Answer)

• NaClO • bleach • used in water treatment • bleaches paper and textiles

#15

Front (Question)

Benefits of water treatment

Back (Answer)

• kill disease-causing microorganisms • prevents growth of algae

#16

Front (Question)

Disadvantages of water treatment

Back (Answer)

• chlorine gas is toxic • chlorinated hydrocarbons are carcinogenic