We can look at the band structure of an element to get an idea of how many electronsper atom participate in conduction. We can also determine this numberbased on the free electron density, the atomic mass, and the mass density of thematerial. Calculate the free electron density of lithium. The Fermi energy is 4.72 eV.

the free electron density of lithium is 2.3 × 10²⁸ /m³

Explanation:

The Fermi energy is 4.72 eV.

The Fermi energy (highest filled orbital energy ) of free electron is

Rearrange the above equation for free electron density of lithium

where,

h = 6.626 × 10⁻³⁴J.s

= 9.11 × 10⁻³¹kg

= 4.72eV

Thus, the free electron density of lithium is 2.3 × 10²⁸ /m³

the earths atmosphere is made up of nitrogen and oxygen. solids can turn into gasses through a process called sublimation. sublimation is the transition of a substance directly from the solid to the gas phase, without passing through the intermediate liquid phase.

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