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Halogen hydrides MCQ - Practice Questions with Answers

Edited By admin | Updated on Sep 25, 2023 25:24 PM | #NEET

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Hydrides is considered one of the most asked concept.
17 Questions around this concept.

Solve by difficulty

In the case of alkali metals, the covalent character decreases in the order:

A

$M F>M C I>M B r>M I$

B

$M F>M C I>M I>M B r$

C

$M I>M B r>M C I>M F$

D

$M C I>M I>M B r>M F$

The variation of the boiling point of the hydrogen halides is in the order $\mathrm{HF}>\mathrm{HI}>\mathrm{HBr}>\mathrm{HCl}$..
What explains the higher boiling point of hydrogen fluoride?

A

The electronegativity of fluourine is much higher than for other elements in the group

B

There is strong hydrogen bonding between HF molecules

C

The bond energy of HF molecules is greater than in other hydrogen halides.

D

The effect of nuclear shielding is much reduced in fluorine which polarises the HF molecule.

Concepts Covered - 0

Hydrides

HF is a low boiling liquid due to intermolecular hydrogen bonding. The volatility order of these hydrides follow the given order:
HCl > HBr > HI > HF
Thus, the boiling point order would be vice-versa of this order. Thus.
HF > HI > HBr > HCl
As we move down the group, the bond length between the hydrogen and the halogen element increases. Thus, thermal stability, bond strength and dipole moment decrease down the group and follow the order given below:
HF > HCl > HBr > HI
As the bond length increases down the group, the bond dissociation energy decreases and thus, the reducing character and acidic strength of hydrides decrease down the group.

Study other Related Concepts

Halogen hydrides Current Topic

Physical Properties of Boron Family

Anomalous Behaviour of Boron

Diagonal Relationship of B and Si

Chemical Properties of Boron Family

Orthoboric Acid

Group 14 Elements (Carbon Family)

Allotropes of Carbon

Carbon monoxide and carbon dioxide

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