Detailed calculations show that the value of for Na and K atoms is 2.51+ and 3.49+, re...

Detailed calculations show that the value of for Na and K atoms is 2.51+ and 3.49+, respectively. (a) What value do you estimate for experienced by the outer-most electron in both Na and K by assuming core electrons contribute 1.00 and valence electrons contribute 0.00 to the screening constant? (b) What values do you estimate for using Slater's rules? (c) Which approach gives a more accurate estimate of ? (d) Does either method of approximation account for the gradual increase in that occurs upon moving down a group?