The correct answer is Tungsten.Tungsten (W) has its atomic number 74.Tungsten is used in filaments of incandescent light bulbs.Important PointsCopperMost copper is used in electrical equipment such as wiring and motors.This is because it conducts both heat and electricity very well, and can be drawn into wires. AluminiumIt is used in a huge variety of products including cans, foils, kitchen utensils, window frames, beer kegs and aeroplane parts.LeadLead is still widely used for car batteries, pigments, ammunition, cable sheathing, weights for lifting, weight belts for diving, lead crystal glass, radiation protection and in some solders.