Question

A certain element has a melting point over 700 ∘c and a density less than 2.00 g/cm3. give one possible identity for this element. enter the symbol for the element. hints

Answer 1

Te

Step-by-step explanation:

The group 16 of the periodic table generally forms ions of the - 2 state. And, since it is silvery white lustrous and brittle it must be a metalloid, and the only metalloid in the group 16 is tellurium which is a silvery white and has shiny luster when in pure form.

Answer 2

A melting point of over 700 C and a density of less than 2 g/cm3 can be observed for many group 2 elements. In this group, the density increases on moving down the group, whereas the melting point increases upto calcium and then starts decreasing.

Calcium, symbol Ca is the element with melting point around 840 C and density of 1.55 g/cm3 which is closest to the specified data range .