S and P Block Elements Test

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S and P Block Elements Test - 3

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Weekly Quiz Competition

Question 1
1 / -0

Which of the following statements regarding sulphur is incorrect?

A
S₂ molecule is paramagnetic.

B
The vapour at 200 °C consists mostly of S₈ rings.

C
At 600 °C the gas mainly consists of S₂ molecules.

D
The oxidation state of sulphur is never less than +4 in its compounds.

Solution

Oxidation state of sulphur ranges between –2 to +6 in different compounds. Hence option D is incorrect.
Question 2
1 / -0

The stable oxidation state of Tl is +1 hence its hydroxide is similar to -

A
Ca(OH)₂

B
Al(OH)₃

C
Mg(OH)₂

D
NaOH

Solution

Tl⁺¹ stable i.e. Na⁺ OH^–
Question 3
1 / -0

Which is true for an element R present in 13^th group of the periodic table ?

A
It is gas at room temperature

B
It has oxidation state of + 4

C
It forms R₂O₃

D
It forms R X₂

Solution

Group 13 elements are in +3 and +1 oxidation state.
thus they form R₂O₃ Type oxide. Ex. Al₂O₃
Question 4
1 / -0

Choose the incorrect option

A
Tendency of form ionic compound increases from B to Tl

B
Boron forms only covalent compound

C
Thallium forms only ionic compounds

D
Group 13 elements have less tendency to form complexes than the s-block elements

Solution

Group 13 element have more tendency to form complex than s-block element
→ due to their small size L more effective nuclear charge as well as vacant orbitals to accept electrons.

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S and P Block Elements Test - 3

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S and P Block Elements Test - 3

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Question 1

S2 molecule is paramagnetic.

The vapour at 200 °C consists mostly of S8 rings.

At 600 °C the gas mainly consists of S2 molecules.

The oxidation state of sulphur is never less than +4 in its compounds.

Solution

Question 2

Ca(OH)2

Al(OH)3

Mg(OH)2

NaOH

Solution

Question 3

It is gas at room temperature

It has oxidation state of + 4

It forms R2O3

It forms R X2

Solution

Question 4

Tendency of form ionic compound increases from B to Tl

Boron forms only covalent compound

Thallium forms only ionic compounds

Group 13 elements have less tendency to form complexes than the s-block elements

Solution

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S₂ molecule is paramagnetic.

The vapour at 200 °C consists mostly of S₈ rings.

At 600 °C the gas mainly consists of S₂ molecules.

Ca(OH)₂

Al(OH)₃

Mg(OH)₂

It forms R₂O₃

It forms R X₂