Single Choice

Identify the correct statement(s) given below. (a) $$O_2$$ is paramagnetic. (b) $$H_2O$$ is liquid while $$H_2S$$ is gas under given conditions. (c) Boiling point of $$H_2O$$ is abnormally high.

A(b) & (c) are correct
BOnly (a) is correct
COnly (a) & (b) are correct
DAll are correct.
Correct Answer

Solution

(a) Due to the presence of two unpaired electrons in anti-bonding molecular orbitals, $$O_2$$ is paramagnetic.
(b) $$H_2O$$ molecules have intermolecular H-bonding due to greater electronegativity of oxygen hence, $$H_2O$$ is liquid; $$H_2S$$ lacks H-bonding hence, gas
(c) Due to intermolecular H-bonding Boiling point of H$$_2$$O is abnormally high.

Hence, the correct option is $$A$$

SIMILAR QUESTIONS

Chemical Bonding

The low density of ice compared to water is due to:

Chemical Bonding

Statement 1 : Conc $$\mathrm{H}_{2}\mathrm{S}\mathrm{O}_{4}$$ is a low volatility and viscos nature acid. Statement2: lt is due to Hydrogen bonding.

Chemical Bonding

The correct order of boiling point is:

Chemical Bonding

The electronegativities of nitrogen and chlorine are almost same. However, $$NH_3$$ exists as liquid whereas $$HCl$$ as gas due to __________ between the molecules of $$NH_3$$.

Chemical Bonding

Hydrogen bonding plays a central role in the following phenomena :

Chemical Bonding

In solid ice, oxygen atom is surrounded

Chemical Bonding

Hydrogen halide with the highest boiling point is:

Chemical Bonding

Which of the following observations can be explained on the basis of hydrogen bonding? (i) $$H-F$$ has higher boiling point than other halogen acids. (ii) $$H_2O$$ has highest boiling point among hydrides of group 16 elements. (iii) $$NH_3$$ has lower boiling point than $$PH_3$$.

Chemical Bonding

The ice floats on water because:

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