question_answer9) Sodium crystallizes in the cubic lattice and the edge of the unit cell is 430 pm. Calculate the number of atoms in a unit cell. What is the structure of sodium crystal? (Density of , atomic mass of ) 2View Answer play_arrow
question_answer14) Give reasons: (a) Aluminum metal cannot be produced by the electrolysis of aqueous solution of aluminum salt. 1 (b) Rusting of iron is quicker in saline water than ordinary water. 1View Answer play_arrow
question_answer17) (a) Complete the following reaction : 1 (i) (ii) (b) Give reasons for the following: 1 (i) Nitric oxide becomes brown when released in air. (ii) is ionic in nature in the solid state.View Answer play_arrow
question_answer30) (a) What is the basic difference between the electronic configuration of the transition and inner transition elements? 2 (b) Write ionic equation for the conversion of: (i) Chromate to dichromate 1 (ii) Manganate to permanganate 1 (iii) Permanganic to manganese 1View Answer play_arrow
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