In Atoms and Molecules Class 9 Science notes, facts that matter are the key points, definitions, laws, and formulas that summarise the whole chapter in a concise way. They highlight important concepts like atomic theory, chemical laws, mole concept, equations, and numericals to help in quick revision and exam preparation.
Question : What is the atomicity of Phosphorus?
Option 1: Poly-atomic
Option 2: Monoatomic
Option 3: Diatomic
Option 4: Tetra-atomic
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