Question

explain copper has a high density

Answer 1

Agriculture has had to continually adapt to sustain the rising population with enough food. In the current situation, the amount of arable land is being depleted by the emergence of cities and industries around the world, as well as the degradation of existing agricultural land.The development of non-farming activities over the past 250 years after the Industrial Revolution partnered with the exponential growth of the population has created a rising demand for agricultural output as well as increased investment into agriculture to produce an increased output (Riggs 267). In light of these trends, new technologies and strategies are used to create high-density farming. High-density farming is producing a higher yield of production in a smaller area.  

Answer 2

The density of elements going from left to right in the periodic table increase in density up to the element copper.

Similarly the density of elements goes up as we move down the periodic table. The reason density increases in these two cases is the same; the atomic mass increases in both cases.

Copper doesn’t have a particularly high density in this respect, it fits quite nicely within trends in the periodic table to the left and below.

However a better question might be why it is so much more dense than zinc, which is just to the right of it on the periodic table. That reason is also tied up with the reactivity of zinc, which significantly exceeds that of copper. Zinc, like other group 12 (or IIB) metals has a filled outer d orbital. That makes its chemical properties similar to the alkaline earth metals. Zinc is on the cusp of the metalloids, so the bonding together between nuclei through metallic bonding is weakened, which is the reason for the reduction in density to that of copper.[1]