MEDIUM
12th Andhra Pradesh Board
IMPORTANT
Earn 100

Which one of the following does not exist?

50% studentsanswered this correctly

Important Questions on p-Block Elements

MEDIUM
12th Andhra Pradesh Board
IMPORTANT
Why do noble gases have comparatively large atomic sizes?
MEDIUM
12th Andhra Pradesh Board
IMPORTANT

List out the uses of neon.

MEDIUM
12th Andhra Pradesh Board
IMPORTANT

Write any two uses of argon.

MEDIUM
12th Andhra Pradesh Board
IMPORTANT
In modern diving apparatus, a mixture of He and O2 is used. Why? 
MEDIUM
12th Andhra Pradesh Board
IMPORTANT

Helium is heavier than hydrogen. Yet helium is used (instead of H2) in filling balloons for meteorological observations. Why?

MEDIUM
12th Andhra Pradesh Board
IMPORTANT

How is XeO3 prepared?

MEDIUM
12th Andhra Pradesh Board
IMPORTANT
Give the preparation of XeOF4.
HARD
12th Andhra Pradesh Board
IMPORTANT

Give the preparation of XeO2F2.