hand writing please

I. It relates to the structure of atoms and crystals of silicon, which is a basic material for electronic materials and is used as a battery cathode material. 1. Draw the electron arrangement of silicon atoms. 2. Draw the unit cell of the crystal structure of silicon, and find the coordination number (coordination \#), density, and atomic packing factor. 3. Draw the arrangement of atoms on the planes (100), (110), and (111). 4. Investigate the elastic modulus in the directions [100], [110], and [111] and explain the difference in elastic modulus in relation to atomic arrangement and density