Periodic Classification of Elements
NIOS · Class 10 · Science & Tech
All formulas from Periodic Classification of Elements in NIOS Class 10 Science & Tech. Key equations, constants, and identities for board exam preparation.
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Historical Development of Classification
Atomic mass of middle element = (Atomic mass of 1st + Atomic mass of 3rd) ÷ 2
Modern Periodic Table Structure
Types of Elements
Periodic Trends - Atomic Size
Atomic radius = Distance from nucleus to outermost electron shell
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