Physics – Concept on Atom, Molecule- Important Points
ATOM Atoms are very small, they are smaller than anything that we can imagine or compare with. Relative Sizes Radii (in m) Example 10–1 Watermelon 10–2 Ant 10–10 Atom of hydrogen 10–8 Molecule of haemoglobin 10–4 Grain of sand 10–9 Molecule of water Dalton was the first scientist to use the symbols for elements in …