Balbharati solutions for Chemistry [English] 11 Standard chapter 9 - Elements of Group 13, 14 and 15 [Latest edition]

Choose the correct option.

Which of the following is not an allotrope of carbon?

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_________ is inorganic graphite.

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Haber’s process is used for preparation of _______

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Thallium shows different oxidation state because __________

Choose the correct option.

Which of the following shows the most prominent inert pair effect?

Identify the group 14 element that best fits the following description.

Nonmetallic element

Identify the group 14 element that best fits the following description.

Form the most acidic oxide

Identify the group 14 element that best fits the following description.

They prefer the +2 oxidation state.

Identify the group 14 element that best fits the following description.

Forms strong π bonds.

Give reason.

Ga³⁺ salts are better reducing agents while Tl³⁺ salts are the better oxidizing agent.

Give reason.

PbCl₄ is less stable than PbCl₂.

Give the formula of a compound in which carbon exhibit an oxidation state of +4

Give the formula of a compound in which carbon exhibit an oxidation state of +2

Give the formula of a compound in which carbon exhibit an oxidation state of −4

Explain the trend of the following in group 13 elements:

Atomic radii

Explain the trend of the following in group 13 elements:

ionization enthalpy

Explain the trend of the following in group 13 elements:

electron affinity

Answer the following.

What is the hybridization of Al in AlCl₃?

Answer the following.

Name a molecule having a banana bond.

Draw the structure of the following.

Orthophosphoric acid

Draw the structure of the following.

Resonance structure of nitric acid

Find out the difference between Diamond and Graphite.

Find out the difference between White phosphorus and Red phosphorus

What are silicones?

Where are silicones used?

Explain the trend in the oxidation state of elements from nitrogen to bismuth.

Give the test that is used to detect borate radicals is qualitative analysis.

Explain the structure and bonding of diborane.

A compound is prepared from the mineral colemanite by boiling it with a solution of sodium carbonate. It is a white crystalline solid and used for inorganic qualitative analysis.

Name the compound produced.

A compound is prepared from the mineral colemanite by boiling it with a solution of sodium carbonate. It is a white crystalline solid and used for inorganic qualitative analysis.

Write the reaction that explains borax formation.

Ammonia is a good complexing agent. Explain.

State true or false. Correct the false statement.

The acidic nature of oxides of group 13 increases down the graph.

State true or false. Correct the false statement.

The tendency for catenation is much higher for C than for Si.

Match the pairs from columns A and B.

Give the reactions supporting the basic nature of ammonia.

Shravani was performing inorganic qualitative analysis of a salt. To an aqueous solution of that salt, she added silver nitrate. When a white precipitate was formed. On adding ammonium hydroxide to this, she obtained a clear solution. Comment on her observations and write the chemical reactions involved.