What element connect the metallic atoms?

What kind of crystal bonding possessing high melting and boiling points?

Which crystals below are formed by van der Waals force?

What energies involved for A, B, and C in the figure below:

In the figure below, what is the point of the minimum energy for the red curve?

Referring to the non-grading assessment 1 question 3, the cohesive energy ratio of bcc to fcc for neon is 0.956. Which factors affecting the stability of the fcc structure?

In the figure below, what is the C represented?

By given the dispersion relation, vg=(Ca2/M)1/2 cos1/2 Ka, for an atomic vibration in the first Brillouin zone boundary K = <pi>/a, the group velocity depending on?

What is a phonon?

According to the heat capacity, Cv, why Germanium possessing higher heat capacity than Silicon at the low temperature region as shown in figure below:

According to the thermal conductivity, k = 1/3 Cv v l, at low temperature region, what are the main factors affecting the thermal conductivity of a metal?

The total phono energy, U = f dw D(w) <n(w)> h'w, for each polarization modes. According to the Debye model, the density of states, D(w) = dN/dw, what are the important parameters affecting the total phonon energy?

According to the thermal conductivity, k = 1/3 Cv v l, why Copper (400 W/m K) possessing higher thermal conductivity than Gold ( 320 W/m K)?

If you are assigned to make a heater for a super-efficient electric kettle, what metal element you going to choose?