Chem

posted by .

Hi everyone, I'm having problems with effective nuclear charge. Regarding these problems.

Calculate Zeff for a valence electron in an oxygen atom.
and
Calculate Zeff for the 4s electron in a copper atom, .
and
Calculate Zeff for a 3d electron in a copper atom, Cu.

Like for the first question it was Zeff= 8-2
= +6 but it was wrong so i'm lost.

The question gave further info with regards to the formula Zeff= Z-S

where is true nuclear charge and is the amount of shielding.
In 1930, John C. Slater devised the following set of empirical rules to estimate for a designated or electron:

Write the electron configuration of the element, and group the subshells as follows: (1s), (2s, 2p), (3s, 3p), (3d), (4s, 4p), (4d), (4f ), (5s, 5p), and so on.
Electrons in groups to the right of the (, ) group contribute nothing to the shielding constant for the designated electron.
All the other electrons in the (ns,np ) group shield the designated electron to the extent of 0.35 each.
All electrons in the n-1 shell shield to the extent of 0.85 each.
All electrons in the n-2 shell, or lower, shield completely—their contributions to the shielding constant are 1.00 each.
When the designated electron is in an nd or nf group, rules (i), (ii), and (iii) remain the same but rules (iv) and (v) are replaced by the following:
Each electron in a group lying to the left of nf or nd group contributes 1.00 to the shielding constant.
These rules are a simplified generalization based on the average behavior of different types of electrons.

  • Chem -

    plz help :(

  • Chem -

    Have you seen this. It is a site that essentially does what you have described for you.
    http://www.chm.davidson.edu/ronutt/che115/Zeff/Zeff.htm

  • Chem -

    A) 8 - 3.45 = 4.55

    B) 29 - 25.30 = 3.70

    C) 29 - 21.15 = 7.85

    D) (I had the same homework)
    1.effective nuclear charge
    2.principle quantum number

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Chemistry

    Hi everyone, I'm having problems with effective nuclear charge. Regarding these problems. Calculate Zeff for a valence electron in an oxygen atom. and Calculate Zeff for the 4s electron in a copper atom, . and Calculate Zeff for a …
  2. chemistry

    How do i calculate the effective nuclear charge of a 3d electron of copper?
  3. Chemisty

    Using the equation Zeff = Z - S and assuming that core electrons contribute 1.00 and valence electrons contribute 0.00 to the screening constant, S, calculate Zeff for the 2p electrons in F^- and Na^+ Repeat this calculation using …
  4. chemistry

    (a) The characteristic emission from Ca occurs at 422.7 nm and corresponds to an electron going from a 4p orbital to a 4s orbital. Calculate the energy of the electron in the 4p orbital. Calculate Zeff for the electron in the 4p orbital. …
  5. Chemistry

    Use Equation 7.1 and assuming that core electrons contribute 1.00 and valence electrons contribute nothing to the screening constant, S, calculate Zeff} for these two ions. Express your answers as integers. Enter your answers numerically …
  6. Chemistry

    Use Equation 7.1 and assuming that core electrons contribute 1.00 and valence electrons contribute nothing to the screening constant, S, calculate Zeff} for these two ions. Express your answers as integers. Enter your answers numerically …
  7. chemistry

    Use Equation 7.1 and assuming that core electrons contribute 1.00 and valence electrons contribute nothing to the screening constant, S, calculate Zeff} for these two ions. Express your answers as integers. Enter your answers numerically …
  8. Chemistry

    What is the zeff value for a valence electron in an oxygen atom?
  9. chemistry

    Using the equation Zeff=Z−S and assuming that core electrons contribute 1.00 and valence electrons contribute 0.00 to the screening constant, S, calculate Zeff for the 2p electrons in both ions.
  10. Inorganic Chemistry

    Use Slater's rules to calculate the effective nuclear charge, Z* or Zeff, for a 4f electron in Eu, Tb, and Dy.

More Similar Questions