28. Which of the following has the lowest standard molar entropy? (A) C(graphite), (B) p 4(s), (C) S8(s), (D) C60(s), (E) C(diamond)

1. A beam of light with an intensity of 15 W is. incident on a copper plate (work function is7.43xl0-19 J). Electrons with a minimum wavelength of 3.75x10 －10 m are ejected from the surface of the copper. Calculate the frequency of the incident light. [Hint: Plank constant = 6.626 x 10－34J·s] (A)3.7lx1015Hz (B) 3.71 x 1016 Hz,(C) 3.71 x 1017 Hz,(D) 3.71 x 1018Hz(E) none of above

28. Which of the following has the lowest standard molar entropy?
(A) C_(graphite),
(B) p _4(s),
(C) S_8(s),
(D) C_60(s),
(E) C_(diamond)

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