Question

-Calculate the third ionization of Lithium ( this requires no approximations or assumptions)? -Calculate the firse...

-Calculate the third ionization of Lithium ( this requires no approximations or assumptions)?

-Calculate the firse and second ionization energies of lithium using slaters rule?

-Calculate the first and second ionization enegies of lithium using the rules of Clementi and Raimondi?

Science   Chemistry   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

The energy of an electron in the n th Bohr orbit of a H-like atom ( one electron systems) like H,He+ ,Li++ .Be+++ etc is given by

En = - Z2 x 13.6 eV / n2

Z = Atomic number ;     n = quantum number

For Li , Z = 3

Therefore for Li++

E1 = - 32 x 13.6 eV / 12 = - 122.4 eV

E1 = - 122.4 eV means that when an electron at infinite distance falls into the first Bohr orbit, 122.4 eV energy is released (hence the negative sign).

Therefore the energy required to remove an electron in the first Bohr orbit to infinite distance is +122.4 eV

Therefore,

the ionization energy of Li++ = + 122.4 eV

-------------------------------------------------------------------------------------------------------------------------

Ionization energy in Joules

1eV = 1.602 x 10 -19 J

Therfore, 122.4 eV = 122.4 x 1.602 x 10 -19 J = 3.48 x 10 -17 J

The ionization energy of Be+++ = 1.96 x 10 -17 J

-----------------------------------------------------------------------------------------------------------------------------------

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
a) calculate the third ionization energy of lithium b) calculate the first and second ionization energies...
a) calculate the third ionization energy of lithium b) calculate the first and second ionization energies of lithium using slaters rules. c) calculate the first and second ionization energies of lithium using the rules of clementi and raimondi please show all work!
The first ionization energies for Li, O, and F increase across this series. Using Slater's rules,...
The first ionization energies for Li, O, and F increase across this series. Using Slater's rules, calculate Zeff for Li and O and F.
using newtons method to find the second and third root approximations of 2x^7+2x^4+3=0 starting with x1=1...
using newtons method to find the second and third root approximations of 2x^7+2x^4+3=0 starting with x1=1 as the initial approximation
Haskell Calculate the first 5 elements of the list f defined below using successive approximations. Don't...
Haskell Calculate the first 5 elements of the list f defined below using successive approximations. Don't count [ ] as one of the 5. If you like, you can cut down on the writing by defining extra variables. E.g., maybe apx1 is the first approximation, apx2 is the second, and so on. f = (1,1) : [(b,a+b) | (a,b) <- f]
Calculate the second ionization energy of the metal M (ΔHion2° in kJ/mol) using the following data:...
Calculate the second ionization energy of the metal M (ΔHion2° in kJ/mol) using the following data: Lattice enthalpy of MO(s), ΔHl° = -2297 kJ/mol Bond dissociation enthalpy of O2(g) = +498 kJ/mol First electron affinity of O = -141 kJ/mol Second electron affinity of O = +744 kJ/mol Enthalpy of sublimation of M = + 102 kJ/mol First ionization energy of M = + 340 kJ/mol Standard enthalpy of formation of MO(s), ΔHf° = -336 kJ/mol Refer to the textbook...
. An investment requires an initial disbursement of € 2,500,000 and the duration of the project...
. An investment requires an initial disbursement of € 2,500,000 and the duration of the project is 3 years, in the first of which it generates a cash flow of € 1,500,000, in the second € 3,700,000 and the third € 4,100,000. Calculate the Net Present Value of the investment, knowing that inflation is 3% cumulative annually and that the required profitability in the absence of inflation is 8%. Calculate the actual internal rate of return of the previous investment.
A firm is considering investing in a project that requires an initial investment of $200,000 and...
A firm is considering investing in a project that requires an initial investment of $200,000 and is expected to produce cash inflows of $60,000, $80,000, and $100,000 in first, second, and third years. There will be no residual value. The firm applies a discount rate of 10%. Discount factors for Year 1, 2 and 3 are 0.909, 0.826, and 0.751 respectively. Required: i) Calculate the NPV of the project. ii) Explain the meaning of NPV and its advantages as an...
A firm is considering investing in a project that requires an initial investment of $200,000 and...
A firm is considering investing in a project that requires an initial investment of $200,000 and is expected to produce cash inflows of $60,000, $80,000, and $100,000 in first, second, and third years. There will be no residual value. The firm applies a discount rate of 10%. Discount factors for Year 1, 2 and 3 are 0.909, 0.826, and 0.751 respectively. Required: i) Calculate the NPV of the project. ii) Explain the meaning of NPV and its advantages as an...
4. The money supply contraction process Suppose First Main Street Bank, Second Republic Bank, and Third...
4. The money supply contraction process Suppose First Main Street Bank, Second Republic Bank, and Third Fidelity Bank all have zero excess reserves. The required reserve ratio is 20%. Raphael, a client of First Main Street Bank, purchases $1,500,000 of Treasury bills in an open market sale undertaken by the Fed. Upon receipt of Raphael's check, the Fed subtracts $1,500,000 from First Main Street Bank’s Federal Reserve account, thereby extinguishing the money. Complete the following table to reflect any changes...
11. Calculate the ΔH° for the addition of H2O2 to ethane to give 1,2-ethanediol. (BDE HO-OH...
11. Calculate the ΔH° for the addition of H2O2 to ethane to give 1,2-ethanediol. (BDE HO-OH is 49 kcal/mol, C=C pi bond is 65 kcal/mol). 12. For the previous problem, why is the pi BDE for C=C 65 kcal/mol rather than simply the difference between H3C-CH3 and C=C as listed in tables of BDE (Table 5.1 7th ed or Table 3.2 6th ed. for example)? 13) Draw a properly labeled reaction coordinate diagram for a reaction with the following criteria:...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT