aluminium is usually found in 3 oxidation state in contrast

Aluminium is usually found in $$ + 3$$ oxidation state. In contrast, thallium exists in $$ + 1\,\,{\text{and}} + 3$$ oxidation states. This is due to:

A. inert pair effect

B. diagonal relationship

C. lattice effect

D. lanthanoid contraction

Answer : inert pair effect

Solution :
Due to the inert pair effect, thallium exists in more than one oxidation state. Also, for thallium + 1 oxidation state is more stable than + 3 oxidation state.

Releted MCQ Question on
Inorganic Chemistry >> P - Block Elements

Releted Question 1

The reddish brown coloured gas formed when nitric oxide is oxidised by air is

A. $${N_2}{O_5}$$

B. $${N_2}{O_4}$$

C. $$N{O_2}$$

D. $${N_2}{O_3}$$

View Answer

Releted Question 2

The temporary hardness of water due to calcium carbonate can be removed by adding —

A. $$CaC{O_3}$$

B. $$Ca{\left( {OH} \right)_2}\,$$

C. $$CaC{l_2}$$

D. $$\,HCl$$

View Answer

Releted Question 3

Which of the following is most stable to heat

A. $$HCl$$

B. $$HOCl$$

C. $$HBr$$

D. $$HI$$

View Answer

Releted Question 4

White $$P$$ reacts with caustic soda. The products are $$P{H_3}$$ and $$Na{H_2}P{O_2}.$$ This reaction is an example of

A. Oxidation

B. Reduction

C. oxidation and reduction

D. Neutralisation

View Answer

Aluminium is usually found in $$ + 3$$ oxidation state. In contrast, thallium exists in $$ + 1\,\,{\text{and}} + 3$$ oxidation states. This is due to:

Releted MCQ Question on
Inorganic Chemistry >> P - Block Elements

The reddish brown coloured gas formed when nitric oxide is oxidised by air is

The temporary hardness of water due to calcium carbonate can be removed by adding —

Which of the following is most stable to heat

White $$P$$ reacts with caustic soda. The products are $$P{H_3}$$ and $$Na{H_2}P{O_2}.$$ This reaction is an example of

Practice More Releted MCQ Question on
P - Block Elements

Practice More MCQ Question on Chemistry Section

Aluminium is usually found in $$ + 3$$ oxidation state. In contrast, thallium exists in $$ + 1\,\,{\text{and}} + 3$$ oxidation states. This is due to:

Releted MCQ Question on Inorganic Chemistry >> P - Block Elements

The reddish brown coloured gas formed when nitric oxide is oxidised by air is

The temporary hardness of water due to calcium carbonate can be removed by adding —

Which of the following is most stable to heat

White $$P$$ reacts with caustic soda. The products are $$P{H_3}$$ and $$Na{H_2}P{O_2}.$$ This reaction is an example of

Practice More Releted MCQ Question on P - Block Elements

Practice More MCQ Question on Chemistry Section

Releted MCQ Question on
Inorganic Chemistry >> P - Block Elements

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P - Block Elements