Aluminum has an atomic number of 13. in which energy levels are the electrons in an aluminum atom?
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Ответ:
The length of the segment is:
D= sqrt((4-2)^2 + (2- -1)^2 =
Sqrt( 2^2 + 3^2) =
Sqrt( 4 + 9) = sqrt(13) = 3.6055
The ratio is 3:1 so q is 3/4 of the way to point c
Q = 3/4 x sqrt(13)
Q = 3sqrt(13)/4 exact answer
Q = 2.7041 as a decimal answer