According to the Aufbau principle,  

The correct formula of the ionic compound between aluminum and sulfur in which both elements achieve the noble gas configuration is:

Place the following elements in order of decreasing atomic radius (largest first): Mg, Na, S, Si, and Ar.

According to Bohr’s atomic theory, when an electron moves from Orbit 1 to orbit 3:

The correct formula of the ionic compound between aluminum and phosphorous in which both elements achieve the noble gas configuration is:

 Draw a Lewis dot structure for the molecule of NF3 and answer the questions related to the structure. Upload the picture of the Lewis dot structure for additional 2 pts grade along with the other required ones to the  Exam 2 Solutions (Lewis Structures), Extra Credit and Partial Credit assignment after you submit your exam. Number of nonbonding electron domains Electron geometry Molecular shape Polarity(P- polar, NP – nonpolar) F-N-F angle

Place the following elements in order of decreasing first ionization energy (largest first): Ge, Ne, O, S, Si

The patella improves function of the quadriceps because it:

Compute the following: Number of moles of fluorine in 224 g of fluorine Mass of 0.025 mol of fluorine Mass of 1.81×1024 atoms of fluorine Number of moles of fluorine in 2 moles of H2SiF6

The following is a correct ground state configuration of the Ge atom: