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#7 | 17th Group
(Chemistry) > The p-Block Elements (XII)
Related Practice Questions :

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

(a) The electronegativity of fluorine is much higher than for other elements in the group

(b) There is strong hydrogen bonding between HF molecules

(c) The bond energy ol 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

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Difficulty Level:

When Cl2 gas reacts with hot and concentrated sodium hydroxide solution, the oxidation number of chlorine changes from

(a) zero to +1 and zero to -5
(b) zero to -1 and zero to +5
(c) zero to -1 and zero to +3
(d) zero to +1 and zero to -3

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Complete Question Bank

Difficulty Level:

Among the following which is the strongest oxidising agent ?
(a) F2
(b) Br2
(c) I2
(d) Cl2

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Complete Question Bank

Difficulty Level:

(i) What happens when                               (5 marks)

(a) chlorine gas reacts with cold and dilute

solution of NaOH ?

(b) XeF2 undergoes hydrolysis ?

(ii) Assign suitable reasons for the following :

(a) SF6 is inert towards hydrolysis.

(b) H3PO3 is diprotic.

(c) Out of noble gases only Xenon is known to form

established chemical compounds.

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Complete Question Bank

Difficulty Level:

(i) Considering the parameters such as bond dissociation     (5 marks)

enthalpy, electron gain enthalpy and hydration enthalpy,

compare the oxidizing power of F2 and Cl2.

(ii) Complete the following reactions :

(a) Cu + HNO3(dilute)$\to$

(b) Fe3+ + SO2 + H2O$\to$

(c) XeF4 + O2F2$\to$