JEE 2025: Inorganic Chemistry Review

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Questions and Answers

Considering the trends in the periodic table, which of the following elements would you expect to have the highest electronegativity?

  • Chlorine (Cl) (correct)
  • Aluminum (Al)
  • Potassium (K)
  • Sodium (Na)

Which of the following statements accurately describes the relationship between bond order, bond length, and bond energy?

  • Bond order has no impact on bond length or bond energy.
  • As bond order decreases, bond length decreases and bond energy increases.
  • As bond order increases, bond length decreases and bond energy increases. (correct)
  • As bond order increases, bond length increases and bond energy decreases.

In the context of coordination compounds, what is the primary factor that determines the crystal field splitting energy ($\Delta$) in an octahedral complex?

  • The nature of the ligand and the charge of the central metal ion. (correct)
  • The number of d-electrons in the metal ion.
  • The charge of the ligand exclusively.
  • The size of the central metal ion exclusively.

Why does nitrogen exist as a diatomic molecule ($N_2$), while phosphorus forms larger structures such as $P_4$?

<p>Nitrogen's ability to form strong p$\pi$-p$\pi$ multiple bonds is greater than that of phosphorus. (A)</p> Signup and view all the answers

When comparing the stability of halides, which factor primarily accounts for the decreasing stability of hydrogen halides (HX) from HF to HI?

<p>Decreasing bond dissociation enthalpy. (D)</p> Signup and view all the answers

Which of the following properties makes transition metals suitable as catalysts?

<p>Variable oxidation states and ability to form complexes (B)</p> Signup and view all the answers

What is the primary reason behind the difference in color observed in transition metal complexes?

<p>d-d transitions (A)</p> Signup and view all the answers

In qualitative salt analysis, why is it essential to remove interfering anions before testing for cations?

<p>To avoid masking the characteristic reactions of the cations. (D)</p> Signup and view all the answers

How does the presence of a common ion affect the solubility of a sparingly soluble salt?

<p>It decreases the solubility of the salt. (B)</p> Signup and view all the answers

What is the role of a 'bridging ligand' in a polynuclear coordination complex?

<p>To bind two or more metal centers (C)</p> Signup and view all the answers

Flashcards

Periodic Table

The periodic table is a tabular display of the chemical elements, organized by atomic number, electron configuration, and recurring chemical properties.

Chemical Bonding

Chemical bonding is the attractive force that holds atoms together, allowing the formation of chemical compounds.

Coordination Compounds

Coordination compounds are composed of a central metal atom or ion surrounded by ligands (ions or molecules).

P-Block Elements

P-block elements are in groups 13 to 18 of the periodic table. They have their valence electrons in the p-orbitals.

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D-Block Elements

D-block elements are in groups 3 to 12 of the periodic table. They are also known as transition metals.

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Salt Analysis

Salt analysis is a method of identifying ions present in a salt through various chemical tests.

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Study Notes

  • A comprehensive inorganic chemistry review session was streamed live on January 20, 2025, as part of the JEE MahaTandav 2025 series.
  • The session includes concepts and PYQs (Previous Year Questions) for JEE 2025 aspirants.
  • PDF notes for the JEE MahaTandav 2025 session are available via a provided link.
  • The session covers several key topics:

Key Topics

  • Periodic Table (6:44)
  • Chemical Bonding (1:43:53 / 1:43:54)
  • Coordination Compounds (4:01:33)
  • P-Block elements (6:25:23 / 7:08:54)
  • D-Block elements (7:08:54 / 8:59:13)
  • F-Block elements (covered with D-Block)
  • Salt Analysis (8:59:13 / 10:43:00)
  • Students who attended the session found it helpful, with some reporting that questions from the lecture appeared on the JEE exam.
  • One student mentioned that a question similar to one discussed in class about [Nicl4]^-2 appeared in the 22 Jan shift 1 exam.

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