HARD
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The large difference between the melting and boiling points of oxygen and sulphur may be explained on the basis of their atomicity.

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Important Questions on p-Block Elements - II

MEDIUM
Given below are two statements:

Statement I : α and β forms of sulphur can change reversibly between themselves with slow heating or slow cooling.

Statement II : At room temperature the stable crystalline form of sulphur is monoclinic sulphur.

In the light of the above statements, choose the correct answer from the options given below:

EASY
Which of the following is used as disinfectant?
EASY
Which one of the following is not the use of SO2?
EASY
The following statements concern elements in the periodic table. Which of the following is true?
HARD
Explain the formation of O2 molecule by molecular orbital theory.
EASY
In resonance hybrid of ozone molecule, O-O bond length is
MEDIUM

Discuss the general characteristics of group 16 elements with reference to ionisation enthalpy.

MEDIUM
Nitrogen dioxide and sulphur dioxide have some properties in common. Which property is shown by one of these compounds, but not by the other?
MEDIUM
The catalyst used in the Contact Process is 
EASY
The correct order of electron gain enthalpy is:
EASY
In the long form of the periodic table, the valence shell electronic configuration of 5s25p4 corresponds to the element present in:
EASY
Arrange the hydrides of group 16 elements in increasing order of their boiling points.
MEDIUM
Among the following allotropic forms of sulphur, the number of allotropic forms, which will show paramagnetism is _______.
(A) α-sulphur
(B) β-sulphur
(C) S2-form
MEDIUM

Discuss the general characteristics of group 16 elements with reference to

atomic size

EASY
Explain why hydride of sulphur is a gas while hydride of oxygen is a liquid.
MEDIUM

Discuss the general characteristics of group 16 elements with reference to

electronegativity

MEDIUM
On electrolysis of dil. sulphuric acid using Platinum Pt electrode, the product obtained at anode will be
EASY
In the following compounds which has minimum boiling point?