Single Choice

Which of the following statements is true about hydrogen bonding?

A$$Cl$$ and $$N$$ have comparable electronegativities yet there is no $$H-$$bonding in $$HCI$$ because size of $$Cl$$ is large
Correct Answer
BIntermolecular $$H-$$bonding results in decrease in m.p. and b.p
CIce has maximum density at $$0^o$$C due to $$H-$$bonding
D$$KHCl_2(HCl_2{^-})$$ exists but $$KHF_2(HF_2{^-})$$ does not exist due to lack of $$H-$$bonding in $$HCl$$

Solution

There are some limitations to form hydrogen bond for a molecule-
1. Atom must be of $$2nd$$ period means the size of the atom must be small.
Reason= As we go down in group size of the atom is increase means covalent character also increases.
2. Electronegativity of the atom must be $$3$$ or more than $$3$$.
Chlorine:- It follows the $$2nd$$ condition but the size of $$chlorine$$ is large that's why some covalent characters also present in the $$Chlorine$$.
This is the reason $$HCl$$ has not any hydrogen bonding.
So the correct option is [A].

SIMILAR QUESTIONS

Chemical Bonding

The electronegative elements between which the H-bond is formed principally in aqueous ammonia are:

Chemical Bonding

White crystalline solid (A) reacts with $$H_2$$ to form a highly associated liquid (B) and a monoatomic colorless gas (C). The liquid (B) is used for etching glass. Compound (A) undergoes hydrolysis slowly to form (C), (B) and a diatomic gas (D) whose IE is almost similar to that of (C). (B) forms an addition compound with KF to form (E) which is electrolyzed in the molten state to form a most reactive gas (F) which combines with (C) in a 1: 1 ratio to produce (A). The molecule of compound E contains which of the following types of bonds?

Chemical Bonding

$$I$$. Hydrogen bonds can occur in molecules when hydrogen atoms are bonded to nitrogen, oxygen, fluorine, chlorine or bromine. $$II$$. Electronegativity values for elements found in the upper right corner of the periodic table are higher than values for elements located in other regions of the table.

Chemical Bonding

Which contains strongest H-bond?

Chemical Bonding

Which of the following dissolves in ionic solvents?

Chemical Bonding

Which of the following compounds shows strongest hydrogen bonding?

Chemical Bonding

Name the two conditions which must be satisfied for hydrogen bonding to take place in a molecule.

Chemical Bonding

Write a short note on 'Hydrogen bond'.

Chemical Bonding

What requirement should a molecule fulfil for the formation of a hydrogen bond ?

Chemical Bonding

Fill in the blanks: For hydrogen bonding to occur, hydrogen atom must be linked to .......... atom.

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