Inorganic Chemistry

Curriculum

8 Sections
41 Lessons
10 Weeks

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Classification of Elements and Periodicity in Properties:
This section covers the modern periodic table and the periodic trends of elements. Topics include atomic and ionic radii, ionization enthalpy, electron gain enthalpy, electronegativity, valence, and oxidation states.
4
Chemical Bonding and Molecular Structure:
This is a crucial topic that extends beyond just inorganic chemistry, but a deep understanding of bonding is essential. It includes theories like VSEPR, valence bond theory, and molecular orbital theory, as well as concepts like hybridization, resonance, and dipole moment.
5
Coordination Compounds:
This sub-part focuses on complex compounds. Key topics include Werner's theory, IUPAC nomenclature, isomerism (cis-trans, ionization), bonding theories (Valence Bond Theory and Crystal Field Theory), magnetic properties, and the color of coordination compounds.
5
s-Block Elements:
This section deals with the alkali and alkaline earth metals (Groups 1 and 2). It covers their general characteristics, reactivity towards various substances, and the properties of their compounds
5
p-Block Elements:
This is a large and important section covering groups 13 to 18. It details the electronic configuration, general trends in physical and chemical properties, anomalous behavior of the first element in each group, and the preparation, properties, and uses of important compounds of these elements.
7
d- and f-Block Elements:
This section focuses on transition elements (d-block) and inner transition elements (f-block). It includes general characteristics, electronic configuration, and trends in properties like ionization enthalpy, oxidation states, and magnetic properties.
5
Principles of Qualitative Analysis:
This topic, also known as salt analysis, involves the identification of cations and anions. It's an experimental chemistry topic that requires an understanding of the reactions and principles involved in separating and confirming the presence of different ions.
6
Metallurgy (General Principles and Processes of Isolation of Elements):
This part covers the general methods of extracting metals from their ores, including topics like concentration, reduction, refining, and the principles behind these processes
4

Lesson 4: Refining of Metals

This final lesson covers the various processes used to purify the crude metal obtained after the reduction step.

- Distillation: Used for refining low boiling point metals like zinc and mercury. The impure metal is heated to its boiling point and then condensed to collect the pure metal.
- Liquation: This method is used for metals with low melting points, such as tin and lead. The impure metal is heated on a sloping hearth, where the pure metal melts and flows away, leaving the solid impurities behind.
- Electrolytic Refining: This is one of the most common and effective methods for purifying metals like copper and silver. An impure metal rod serves as the anode, and a thin strip of pure metal serves as the cathode. Upon passing an electric current, the impure metal at the anode dissolves and is deposited as pure metal on the cathode.

Vapour Phase Refining: This method involves converting the impure metal into a volatile compound, which is then decomposed at a higher temperature to obtain the pure metal. Two important examples are the Mond’s process for nickel and the van Arkel process for zirconium and titanium.
Zone Refining: This is an extremely effective method for obtaining ultra-pure metals (like semiconductors). A mobile heater moves along a rod of impure metal, causing a small molten zone. As the heater moves, the pure metal crystallizes out, and the impurities are carried along with the molten zone.

Inorganic Chemistry

Curriculum

Lesson 4: Refining of Metals

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