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ATOMS AND MOLECULES, Test, 1. Give an example of a triatomic molecule of an element., 2. Define atomicity., 3. Write the atomicity of the following molecules:, , 4., 5., , 6., 7., 8., , 9., , (i) Sulphur, (ii) Phosphorus, What is an ion? Give one example., Give one word for the following:, (i) A group of atoms carrying a charge, (ii) Positively charged ion, The atomic number of three elements A, B and C are 9, 10 and 13 respectively. Which of them, will form a cation?, Which of the following are tri-atomic and tetra-atomic molecules?, CH3Cl, CaCl2, NH3, PCl3, P2O5, H2O, C2H5OH, Classify each of the following on the basis of their atomicity., (a) F2, (b) NO2, (c) CO2−3, (d) C2H6, (e) CO, (f) H2O2, (g) P4O10, (h) O3, (i) HCl, (j) CH4, (k) He, (l) Ag, Calculate the molecular mass of, (a) CO2, (b) H2O, (c) C6H12O6, (d) NH3, (e) CaCO3, (f) H2SO4, , 10. Write the formula of the following:(a) Ammonia, (b) Magnisum chloride, (c) Sodium sulphate, (d) Calcium carbonate, (e) Potassium sulphate, (f) Copper sulphate