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Class 10 Notes Science

Notes for class 10 Science, Chapter 3: Metals and Non-metals

There are about 115 elements. Based on their properties they have been classified into: → METALS→ NON – METALS→ METALLOIDS METALS: the elements which are present on the left hand side of theperiodic table. They have 1, 2 or 3 valence electrons and loose electron to form positively charged ions called cations. Hence they are called […]