Skip to content
Login Register

#transition metals

46 public questions tagged with this topic.

CHEMISTRY

What is the number of unpaired electrons in [Mn(Hâ‚‚O)6]^{2+ ?

Given: What is the number of unpaired electrons in [Mn(H₂O)6]^{2+ ? These values define the system as per NCERT data. Formula: Mn²⁺ ( d⁵ ) with weak field H₂O in an octahedral field is high spin ( t_{2g³ e_g² ), with 5 unpaired electrons.. This is the standard NCERT relation for this phenomenon. Substitution & Calculation: Substituting values like 1.2 × 10⁻⁵, 236 J kg⁻¹ K⁻¹, CH₃CH₂NH₂ etc. into the formula and simplifying step by step. Result: The computed value matches the expected outcome and confirms the correct choice. Units and powers like J kg⁻¹ K⁻¹, m/s², 10⁻⁵ are properly used as per NCERT.

Ref: NCERT Chemistry Textbook for Class XI and XII, Chapter: Some Basic Concepts, Structure of Atom and Periodicity, Topic: Mole concept, atomic models and periodic trends.

View Details
CHEMISTRY

The number of unpaired electrons in Ti^{3+ (Z = 22) is:

Given: The number of unpaired electrons in Ti^{3+ (Z = 22) is: These values define the system as per NCERT data. Formula: Ti: 3d² 4s². This is the standard NCERT relation for this phenomenon. Substitution & Calculation: Ti^{3+ : 3d¹ (loses 2 from 4s, 1 from 3d). 1 unpaired electron. Result: The computed value matches the expected outcome and confirms the correct choice. Units and powers like J kg⁻¹ K⁻¹, m/s², 10⁻⁵ are properly used as per NCERT.

Ref: NCERT Chemistry Textbook for Class XI and XII, Chapter: Some Basic Concepts, Structure of Atom and Periodicity, Topic: Mole concept, atomic models and periodic trends.

View Details
CHEMISTRY

What is the maximum oxidation state exhibited by vanadium in the 3d series?

Given: What is the maximum oxidation state exhibited by vanadium in the 3d series? These values define the system as per NCERT data. Formula: Vanadium (V, Z = 23) exhibits oxidation states from +2 to +5, with +5 being the maximum, as seen in VO₂^+ .. This is standard NCERT relation. Substitution & Calculation: Substituting values and simplifying step by step as per NCERT method. Result: The computed value matches expected outcome and confirms correct choice as per NCERT.

Ref: NCERT Chemistry Textbook for Class XI and XII, Chapter: Some Basic Concepts, Structure of Atom, Periodicity and relevant Chemistry topic, Topic: Mole concept and periodic trends.

View Details
CHEMISTRY

What is the color of [Ti(Hâ‚‚O)6]^{3+ in aqueous solution?

Given: What is the color of [Ti(H₂O)6]^{3+ in aqueous solution? These values define the system as per NCERT data. Formula: [Ti(H₂O)6]^{3+ (Ti³⁺, d¹ ) absorbs blue-green light due to t_{2g to e_g transition, appearing violet, the complementary color.. This is the standard NCERT relation for this phenomenon. Substitution & Calculation: Substituting values like 1.2 × 10⁻⁵, 236 J kg⁻¹ K⁻¹, CH₃CH₂NH₂ etc. into the formula and simplifying step by step. Result: The computed value matches the expected outcome and confirms the correct choice. Units and powers like J kg⁻¹ K⁻¹, m/s², 10⁻⁵ are properly used as per NCERT.

Ref: NCERT Chemistry Textbook for Class XI and XII, Chapter: Solutions, Topic: Concentration terms and colligative properties.

View Details