Ask questions and get helpful responses.
Ask a New Question
  1. Questions

Physics

A triply ionized beryllium atom (Be3+) has only one electron in orbit about the nucleus. What is the radius of the ion when it is in the n = 9 excited state?

  1. 👍
  2. 👎
  3. 👁
  4. ℹ️
  5. 🚩
DCM

  1. The radii = 5.29x10^-11*n^2

    1. 👍
    2. 👎
    3. ℹ️
    4. 🚩
    👤
    bobpursley

  2. So i did (5.29e-11)(81)= 4.2849e-9. But it still says that is incorrect...

    1. 👍
    2. 👎
    3. ℹ️
    4. 🚩
    DCM

  4. are you certain n is supposed to be 9? That is pretty far out, I would expect in Be+3 an n=3 radii.

    1. 👍
    2. 👎
    3. ℹ️
    4. 🚩
    👤
    bobpursley

  5. That is what the question says n is

    1. 👍
    2. 👎
    3. ℹ️
    4. 🚩
    DCM

  6. For hydrogen-like ion
    r(n) = 0.529•10^-10•n^2/Z ,
    where n is the NUMBER of exited state,
    and Z is the number of the element in the Periodic Table
    (for Be Z =4)
    =0.529•10^-10•81/4 = 1.071•10^-9 m

    1. 👍
    2. 👎
    3. ℹ️
    4. 🚩
    Elena

Respond to this Question

First Name

Your Response

Similar Questions

  1. chem

    There are eight markers in a full set, but Flora and Frank each only have seven markers.Flora is missing the red marker, and Frank is missing the blue marker.What can they do so that each has a full set of markers? * steal the

  2. Chemistry

    Carbon-12 contains 6 protons and 6 neutrons. The radius of the nucleus is approximately 2.7 (femtometers) and the radius of the atom is approximately 70 (picometers). The volume of the nucleus is 8.2×10^−8 pm^3 And the volume

  3. Physics

    A single electron orbits a lithium nucleus that contains three protons (+3e). The radius of the orbit is 1.76*10^-11m. Determine the kinetic energy of the electron.

  4. chemistry

    Which of the following is not a one-electron atom A) H B) He+ C) Li2+ D) Be2+ E) O7+ I know that H, He+, Li2+ and Be3+ are. i can't seem to find out about Be2+ and O7+. How to I calculate it?

  1. PHYSICS

    Compare the electric force holding the electron in orbit (r=0.53×10−10m) around the proton nucleus of the hydrogen atom, with the gravitational force between the same electron and proton. What is the ratio of these two

  2. Physics

    An electron moves on a circular orbit in a uniform magnetic field. The strength of the field is 1.00×10-5 tesla. The kinetic energy of the electron is 178.0 eV. (1 eV = 1 electron volt = 1.6 ×10−19 joules.) Calculate the

  3. Chemistry

    An electron jumps from energy level 1 to energy level 2 by absorbing a photon of energy 8 eV. What is the most likely energy of the photon that will be emitted by the electron when it moves back down to energy level 1? 2 ev 4 ev 8

  4. Physics

    A hydrogen atom is in its third excited state (n=4). Using Bohr theory of the atom calculate (a) the radius of the orbit, (b) the linear momentum of the electron, (c) the angular momentum of the electron (d) the kinetic energy (e)

  1. physics

    The nucleus of a hydrogen atom is a single proton, which has a radius of about 1.0 10-15 m. The single electron in a hydrogen atom normally orbits the nucleus at a distance of 5.3 10-11 m. What is the ratio of the density of the

  2. physics

    ) A hydrogen atom has its electron in the n = 5 level. The radius of the electron's orbit in the Bohr model is 1.323 nm. Find the de Broglie wavelength of the electron under these circumstances. What is the momentum, mv, of the

  3. Physics

    Consider the Bohr energy expression (Equation 30.13) as it applies to singly ionized helium He+ (Z = 2) and an ionized atom with Z=4 and only a single electron orbiting the nucleus. This expression predicts equal electron energies

  4. chemistry

    The energy levels the electron can occupy in the Be3+ ion can be calculated using the energy level equation. A Be3+ ion with an electron in the n= 3.00 level emitted a photon with a frequency of 7.30 × 1015 Hz. What is the value

Still need help? You can ask a new question.