Density of kcl the crystal structure of kcl is the same as that of naci, as shown in figure 3 of the notes on crystal structure (shackelford fig. 3.9, p 67). the density of kcl is 1.984 mg/m3 (g/cm3) a. what are the electronic structures of the k* and cl ions? b. what is the distance between the centers of neighboring potassium and chlorine ions? c. compare your answer in part (b) to what would be estimated from appendix two in shackelford; cl: atomic number k: atomic number 19; atomic radius 0.231 nm; ionic radius 0.133 nm nm; ionic radius 0.181 nm 17: atomic radius 0.107

For cyclohexane compounds drawn in a chair conformation:   -axial bonds are vertical  -equatorial bonds are parallel to two bonds within the ring.  thus, as i assume the chair conformation is drawn:   -the x group is in an axial position, as are the five other vertical bonds.  -three axial bonds are on the top face of the ring  -the other three axial bonds are on the bottom face  the position of the second substituent on each ring carbon is equatorial.  gauche groups must be on an adjacent carbon such as carbon 6 and carbon 2, and also gauche groups are rotated by 60 degrees relative to each other.  drawing the newman projections for c1–c2 and c1–c6 aids in visualizing the groups that are gauche to the y group on c1.  click this link and watch some academic videos that may you more understand the topic 

Non metal is an element or substance that is not a metal metal is a solid material that is typically hard, shiny, malleable, fusible, and ductile, with good electrical and thermal conductivitymetalloid is an element (e.g., germanium or silicon) whose properties are intermediate between those of metals and solid nonmetals. they are electrical semiconductors.

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