Jul 10, 2017 · Well, from the diagram, the electron shells, using so-called "KLMN notation" (or X-ray notation), have the configuration 2, 8, 8, 1.

Jan 13, 2016 · (.5,0) To answer the question we need to find the equations of the diagonals KM and LN and combine them to find the point or intersection. The formula for the equation of the line is (y-y_0)=k(x-x0) where k=(Delta y)/(Delta x)=(y_1-y_0)/(x_1-x_0) Equation of the line 1 in which the diagonal KM lays: k_(KM)=(-4-4)/(1-0)=-8 (y-4)=-8x => y=-8x+4 Equation of line 2 in which the diagonal LN lays: k ...

Mar 3, 2018 · Please see below. . If (x_1,y_1) and (x_2,y_2) are coordinates of the end points of a line segment the coordinates of the midpoint can be found using the following formulas: ((x_1+x_2)/2,(y_1+y_2)/2) In order to prove that RS is the midsegment of the trapezoid, we need to prove that R is the midpoint of KN, and S is the midpoint of LM and RS is parallel to the bases.

MN = sqrt5 The length of MN is: MN = sqrt((x_n-x_m)^2+(y_n+y_m)^2) MN = sqrt((-4--2)^2+(-4--5)^2) MN = sqrt((-2)^2+(1)^2) MN=sqrt5