Arrange these elements in order of decreasing electronegativity: si, k, f, ga.

Silica, sio2, is formed on silicon as an electrically insulating layer for microelectronic devices. silica is formed when silicon is exposed to o2 gas at an elevated temperature. at 900˚c, it takes 90 minutes for the oxygen to diffuse from the surface to form a 0.06 micron (0.06 x 10-6 m) thick layer of sio2 on

Explain why scientists use shared characteristics to make cladograms.

What happened in 2012 and how does it illustrate the importance of understanding the sun and how it works?