What is the oxidation state of $\mathrm{Br}$ in ${\mathrm{BrF}}_5$?

Important Questions on Elements of Groups 16,17,and 18

MEDIUM

12th Maharashtra Board

IMPORTANT

Chemistry Standard 12>Chapter 7 - Elements of Groups 16,17,and 18>Can you recall ?>Q •

How many electrons do halogens require to complete their octet?

HARD

12th Maharashtra Board

IMPORTANT

Chemistry Standard 12>Chapter 7 - Elements of Groups 16,17,and 18>Can you recall ?>Q •

What is the shape of ${\mathrm{CIF}}_3$?

MEDIUM

12th Maharashtra Board

IMPORTANT

Chemistry Standard 12>Chapter 7 - Elements of Groups 16,17,and 18>Use your brain Power>Q •

Chlorine and fluorine combine to form interhalogen compounds. The halide ion will be of chlorine or fluorine?

MEDIUM

12th Maharashtra Board

IMPORTANT

Chemistry Standard 12>Chapter 7 - Elements of Groups 16,17,and 18>Use your brain Power>Q •

Why does fluorine combine with other halogens to form maximum number of fluorides?

MEDIUM

12th Maharashtra Board

IMPORTANT

Chemistry Standard 12>Chapter 7 - Elements of Groups 16,17,and 18>Use your brain Power>Q •

Which halogen has tendency to form more interhalogen compounds?

HARD

12th Maharashtra Board

IMPORTANT

Chemistry Standard 12>Chapter 7 - Elements of Groups 16,17,and 18>Can you recall ?>Q •

What is the correlation between ionisation energies and reactivity of elements?

MEDIUM

12th Maharashtra Board

IMPORTANT

Chemistry Standard 12>Chapter 7 - Elements of Groups 16,17,and 18>Can you recall ?>Q •

State the trends in ionisation energy down a group.

MEDIUM

12th Maharashtra Board

IMPORTANT

Chemistry Standard 12>Chapter 7 - Elements of Groups 16,17,and 18>Exercises>Q 1

Which of the following has highest electron gain enthalpy?