Inorganic Chemistry Notes with PDF

These notes are your ultimate revision weapon to revise Inorganic Chemistry. We’ve distilled years of previous exam questions (PYQs) into one powerful, concise resource. Everything you need to know, nothing you don’t.

• PYQs, Decoded: All key concepts from past exams, organized and simplified.
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History and Significance of the Periodic Table

• The year 2019 was declared the International Year of the Periodic Table by UNESCO.
• This commemorated the 150th anniversary of the periodic table’s establishment.

Periodic Trends and Properties

• Ionization Energy
  • False Statement: Ionization potential gradually decreases along a period.
  • Correct Trend: Ionization energy generally increases across a period.
• Electron Affinity
  • False Statement: Electron affinity always increases from top to bottom in a group.
  • Correct Trend: Electron affinity generally decreases down a group as atomic weight increases.
• Electronegativity
  • False Statement: Electronegativity decreases as atomic number increases in a period.
  • Correct Trend: Electronegativity generally increases across a period.
• Atomic Radius
  • Correct Trend: Atomic radii generally increase from top to bottom within a group.
• Nature of Oxides
  • Group 3 Oxides: Typically basic.
  • Group 4 Oxides: Typically acidic.

Abundance and Distribution of Elements

• In the Universe:
  • Hydrogen is the most common element.
• In the Earth’s Crust/Soil:
  • Oxygen is the most abundant element.
  • Silicon is the second most abundant element.

Classification and Types of Elements

• Primary Classifications:
  • Metals
  • Nonmetals
  • Metalloids
• Clarification: “Gases” is a state of matter, not a fundamental type of element.
• Native Elements: A fundamental (native) element occurs in nature in its pure form (e.g., Diamond, which is carbon).

General Facts about Elements

• Naturally Occurring Elements: There are approximately 90 to 94 naturally occurring elements on Earth. The total number of different chemical elements known to exist on Earth (including unstable ones) is around 100.
• First Artificial Element: Technetium was the first element to be produced artificially.

Know More About Inorganic Chemistry:

• Inorganic Chemistry – Old Year Questions
• Inorganic Chemistry One Liner Questions & Answers