An element 'X' belongs to the 3rd period and group 16 of the Modern Periodic Table. a) Determine the number of valence electrons and the valency of 'X'. b] Write the molecular formula of the compound when X reacts with hydrogen and write its electron-dot structure. c] Name the element X and state whether it is metallic or non-metallic

An element 'X' belongs to the 3rd period and group 16 of the Modern Pe

1.	An element 'X' belongs to the 3rd period and group 16 of the Modern Periodic Table. a) Determine the number of valence electrons and the valency of 'X'. b] Write the molecular formula of the compound when X reacts with hydrogen and write its electron-dot structure. c] Name the element X and state whether it is metallic or non-metallic
Answer» SOLUTION :(i) Electronic CONFIGURATION of X = 2,8,6. Valence ELECTRONS = 6. Valency = 8-6 = 2. (ii) Formula with hydrogen - `H_(2)XorH_(2)S` (III) Sulphur, non-metal.