Science

ChemistryQ&A LibraryDetailed calculations show that the value of Zeff for theoutermost electrons in Na and K atoms is 2.51+ and 3.49+,respectively. (a) What value do you estimate for Zeff experiencedby the outermost electron in both Na and K byassuming core electrons contribute 1.00 and valence electronscontribute 0.00 to the screening constant? (b) Whatvalues do you estimate for Zeff using Slater’s rules? (c) Whichapproach gives a more accurate estimate of Zeff? (d) Doeseither method of approximation account for the gradualincrease in Zeff that occurs upon moving down a group?(e) Predict Zeff for the outermost electrons in the Rb atombased on the calculations for Na and K.Question

Asked Mar 12, 2020

10 views

Detailed calculations show that the value of Z_{eff} for the

outermost electrons in Na and K atoms is 2.51+ and 3.49+,

respectively. (a) What value do you estimate for Z_{eff} experienced

by the outermost 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 Z_{eff} using Slater’s rules? (c) Which

approach gives a more accurate estimate of Z_{eff}? (d) Does

either method of approximation account for the gradual

increase in Z_{eff} that occurs upon moving down a group?

(e) Predict Z_{eff} for the outermost electrons in the Rb atom

based on the calculations for Na and K.

Expert Answer

Find answers to questions asked by student like you

Show more Q&A

Q: O KINETICS AND EQUILIBRIUM Using an equilibrium constant to predict the direction of spontaneous rea...

A: Concept : In any reaction the direction at any given time is decided by compairing the reaction quo...

Q: Nickel carbonyl decomposes to form nickel and carbon monoxide, like this: Ni(co),(9)→ Nis)+4 CO(9) A...

A: The reaction and the given data along with the calculation of equilibrium constant is given below:

Q: Calculate the pH of a 2.0 x 10–3 M solution of pyridine (C5H5N). Kb = 1.7 x 10–9

A: The Bronsted-Lowry acid-base theory was purposed by Bronsted and Lowery is called Bronsted-Lowry aci...

Q: Sulfur dioxide and oxygen react to form sulfur trioxide, like this: 250,(g)+0, (g) → 250;(2) Suppose...

A: A reversible chemical reaction can move in either forward or backward direction. The stage of a reve...

Q: A chemical engineer is studying the following reaction: HCH; CO,(aq)+CH;NH,(aq)– CH;Co, (aq)+CH;NH (...

A: W have given the equilibrium constant for the reaction. Now we know if K > Q than the reaction s...

Q: Consider the titration of 100 mL of 0.25 M formic acid (HCOOH) with 1.0 M NaOH. The Ka of formic aci...

A: Given, Volume of HCOOH = 100 mL = 0.1 L (1 mL = 0.001 L) Molarity of HCOOH = 0.25 M = 0.25 mol/L M...

Q: At a certain temperature, the equilibrium constant K for the following reaction is 8.49 x 101°: NO, ...

A: Since the equilibrium constant K is very very high (of the order 1010). Hence we can say that the re...

Q: A 0.632 M solution of a monoprotic base has a pH of 11.53. What is the ionization constant of this b...

A: Using pH we will get the consentration of OH-. Now since its a monoprotic base. means it will look l...

Q: What is the delta G for the cell reaction Zn(s) | Zn2+(0.10M) || Cu2+(1.0x10-4M) | Cu(s) at 35.0

A: We know nernst equation as shown below.