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Chapter 40: Q4Q (page 1246)

An atom of uranium has closed 6pand 7ssub shells. Which sub shell has the greater number of electrons?

Short Answer

Expert verified

The sub shell 6p has a greater number of electrons.

Step by step solution

01

The given data

A uranium atom has closed 6p and 7s subshells.

02

Understanding the concept of maximum electrons in a shell

For an electronic configuration, the nucleus of an atom is surrounded by orbital sub-shells that are represented by s, p, d, and f. Again, the maximum electron filling capacity of s, p, d, and f are 2, 6, 10, and 14, respectively.

So, using this concept on a filled sub-shell of an atom of uranium, we can get the electrons in each shell.

03

Calculation of the sub shell with a greater number of electrons

From the concept of maximum electrons filled in each shell, we can get that a p(n = 2) subshell has a greater number of electrons than that of s(n =2) subshell.

Thus, for a completely filled sub-shell of uranium, the sub-shell has 6 electrons that that to sub-shell 7s with 2 electrons.

Hence, the sub-shell 6p has more electrons.

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Most popular questions from this chapter

TheKα x-ray line for any element arises because of a transition between the Kshell (n=1) and the Lshell (n=2). Figure 40-13 shows this line (for a molybdenum target) occurring at a single wavelength. With higher resolution, however, the line splits into several wavelength components because the Lshell does not have a unique energy.

(a) How many components does the Kαline have?

(b) Similarly, how many components does the Kβline have?

A helium–neon laser emits laser light at a wavelength of 632.8 nm and a power of 2.3 mW. At what rate are photons emitted by this device?

The wavelength of the Kαline from iron is 193 pm. What is the energy difference between the two states of the iron atom that give rise to this transition?

An electron in an atom of gold is in a state with n = 4. Which of these values of are possible for it:-3, 0, 2, 3, 4, 5?

When electrons bombard a molybdenum target, they produce both continuous and characteristic x-rays as shown in Fig. 40-13. In that figure the kinetic energy of the incident electrons is 35.0 keV. If the accelerating potential is increased to 50.0 keV, (a) what is the value of λmin, and (b) do the wavelengths of the role="math" localid="1661497027757" kαand kβlines increase, decrease, or remain the same?
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