Join / Login
Back

Important questions on Group 17 Elements

Which of the following does not contain fluorine?

A
Fluorspar
B
Cryolite
C
Flouorospatite
D
Chile saltpeter
View Answer

Fluorine is highly reactive because:

A
F-F bond energy is high
B
F-F bond energy is low
C
it is gaseous at room temperature
D
F has a smaller size
View Answer
Assertion

Bond dissociation energy of molecule is less than that of molecule.

Reason

Due to inter-electronic repulsion between F atom ,F---F bond length in molecule is higher than Cl--Cl bond length in molecule

Read the above assertion and reason and choose the correct option regarding it.

A
Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
B
Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
C
Assertion is correct but Reason is incorrect
D
Both Assertion and Reason are incorrect
View Answer

The greater reactivity of is due to :

A
lower electron affinity of F.
B
lower bond energy of bond.
C
higher electronegativity of F.
D
gaseous state of .
View Answer

Elements with atomic numbers 9, 17, 35, 53 are collectively known as:

A
chalcogens
B
halogens
C
lanthanides
D
rare gases
View Answer

In the isolation of fluorine a number of difficulties were encountered.Which statements are incorrect :

This question has multiple correct options
A
Fluorine reacts with moist glass vessels
B
Fluorine has great affinity for hydrogen
C
Electrolysis of aqueous HF gives ozonized oxygen
D
The potential required for the discharge of the fluoride ions lowest
View Answer

Which of the following statement(s) is/are correct for Halogens.

This question has multiple correct options
A
A halogen which is liquid at room temperature is bromine
B
The most electro-negative element is fluorine
C
The most reactive halogen is fluorine
D
The strongest oxidizing agent iodine
View Answer
Assertion

ion is known, which has same geometry as $$X_3^ \, (X\, =\, Cl,\, Br,\, I)$$

Reason

F is most electronegative element.

A
Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.
B
Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion.
C
Assertion is correct but Reason is incorrect.
D
Assertion is incorrect but Reason is correct.
View Answer

VIEW MORE