Passage VI

Consider an electron that is constrained to move along the x-axis. The probability of finding the electron at any given location, x, along the axis is obtained from a distribu­tion function, DF, which is related to the electron's energy. The greater the value of DF at a given x, the greater the probability of finding the electron at that x. Classical theory and quantum theory can be used to derive 2 forms of DF: a classical form and a quantum form.

Table 1 lists the electron energy corresponding to each of 4 DFs. Figure 1 shows the classical and quantum forms of each DF.

35. The figure below shows the Quantum DF for an electron bound within a hydrogen atom.

At approximately what distance from the nucleus is this electron most likely to be found?

Answer and Explanation

Your Answer is

Correct Answer is B

Explanation

According to the fourth line of the article, DF stands for electron's energy, so when DF is the largest, the energy of electron is the largest, and electron is most likely to appear at this time. According to the picture in the title, it should be the abscissa corresponding to the peak, which is about 0.05nm