The discoverer of X-rays was Roentgen. O von Laue. Xavier. O Fermi. O Bragg.

Why does the energy of characteristic x rays become increasingly greater for heavier atoms?

Unreasonable Results A physicist scatters (rays from a substance and sees evidence of a nucleus 7.51013m in radius. (a) Find the atomic mass of such a nucleus. (b) What is unreasonable about this result? (c) What is unreasonable about the assumption?

How many electrons does an element given as 24 X 50 have? How many neutrons? What is the net electric charge of the element?

2. The atomic nucleus may be a sphere of a positive charge, with a diameter very much less than that of the atom. Discuss the experimental evidence which supports this view.

Women in the late 1890s were terrified about the possible misuse of the new Röntgen x rays. What use do you think they envisioned?

Please give a brief explanation of how X-rays were discovered and how they are produced.

2: An electron in an atom revolves around the nucleus in an orbit of radius 0.5 A. Calculate the equivalent magnetic moment, if the frequency of revolution of electron is 1010 MHz.

3. Consider an atom in which a single electron is attached to a positively charged nucleus. The ionization energy (the minimum energy necessary to completely remove the electron from the atom in its ground state) is 217.6 eV. (6) Find the energies of the ground state and the first and second excited states. () How many positive charges (Z) are there in the nucleus? () What are the longest and shortest wavelengths of the photons that can be absorbed by this atom in its ground state? > Gauth

When it decays by beta decay, cobalt-60 also produces two gamma rays with energies of 1.17 MeV and 1.33 MeV. Find the wavelength of the 1.17 MeV photon. 1.063E-12 m 2.12E-12 m .508E-12 m O None of the given options.