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Chapter 41: Q. 15 (page 1207)

What is the electron configuration of the second excited state of lithium?

Short Answer

Expert verified

The electronic configuration of second excited state for lithium atom is1s23s1

Step by step solution

01

Step 1. Given information

The number of possible electrons in sorbital (or shell) is 2 ,

the number of possible electrons in porbital (or shell) is 6 ,

the number of possible electrons in orbital (or shell) is 10,

and the number of possible electrons in gorbital (or shell) is 14 .

02

Step 2. Explanation

We must determine the electron configuration of lithium's second exited state.

In the ground state, the lithium atom (Z= 3) contains two electrons in the 1s shell and one electron in the 2s shell.

For the first excited state of lithium, the electron configuration is:

1s22p

As a result, the electron configuration for lithium's second excited state is:

1s23s

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Most popular questions from this chapter

How many lines of atoms would you expect to see on the collector plate of a Stern-Gerlach apparatus if the experiment is done with
(a) lithium and

(b) beryllium? Explain.

Show that hc=1240eVnm.

Does each of the configurations in FIGURE Q41.6represent a possible electron configuration of an element? If so,

(i) identify the element and

(ii) determine whether this is the ground state or an excited state. If not, why not?

a. What is the decay rate for the 2pstate of hydrogen?

b. During what interval of time will 10%of a sample of 2phydrogen atoms decay?

a few energy levels of the mercury atom.

a. Make a table showing all the allowed transitions in the emission spectrum. For each transition, indicate the photon wavelength, in nm.

b. What minimum speed must an electron have to excite the 492nmwavelength blue emission line in the Hgspectrum?
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