Identify the INCORRECT statements from the following: A. Notation ₁₂²⁴ Mg represents 24 protons and 12 neutrons. B. Wavelength of a radiation of frequency 4.5 10¹⁵ ~s ⁻¹ is 6.7 10⁻⁸ ~m . C. One radiation has wavelength = ₁(900 ~nm ) and energy = E ₁ . Other radiation has wavelength = ₂(300 ~nm ) and energy = E ₂. E ₁: E ₂=3: 1 . D. Number of photons of light of wavelength 2000 pm that provides 1 J of energy is 1.006

Step-by-step solution

Checking each statement: (A) states ₁₂²⁴Mg has 24 protons, but the mass number is 24 and atomic number is 12, so this is INCORRECT. (B) Using = c f = 3 10^8 4.5 10¹⁵ = 6.67 10⁻⁸ m, which is CORRECT. (C) For ₁ = 900 nm and ₂ = 300 nm, since energy is inversely proportional to wavelength, E₁:E₂ = 1:3 , not 3:1 as stated, so this is INCORRECT. (D) For photons at = 2000 pm, energy per photon is E = hc = 9.94 10⁻¹⁷ J, giving N = 1.006 10¹⁶ photons for 1 J, which is CORRECT. The incorrect statements are A and C.