QUIZ (1) PDF - Chemistry Quiz

:‫الرقم بالقائمة‬ :‫االسم‬ Choose the correct answer 1- The atomic nucleus consists of … a- - protons and neutrons b- protons and electrons c- electrons and neutrons d- neutrons 2- The … of the wave is the vertical...

:‫الرقم بالقائمة‬ :‫االسم‬ Choose the correct answer 1- The atomic nucleus consists of … a- - protons and neutrons b- protons and electrons c- electrons and neutrons d- neutrons 2- The … of the wave is the vertical distance from the midline of a wave to wave maxima or wave minima a- amplitude b- wavelength c- frequency d- wavenumber 3- The frequency of an electromagnetic radiation wave is directly and inversely proportional to … and… respectively, of the wave. a- amplitude, wavelength b- wavelength, amplitude c- wavenumber, wavelength d- wavelength, wavenumber 4- According to Rydberg 1/λ = a- 109678(1/n1 -1/n2) b- 109678cm-1(1/n22 -1/n12) c- 109678m-1(1/n1 -1/n2) d- 109678cm-1(1/n12 -1/n22) 5- The spectral lines of the Balmer series of the hydrogen atom emission resulted from a transition from … A- n2 = 2, 3, 4 …,  levels to the n1 = 1 level B- n2 = 3, 4, 5 …,  levels to the n1 = 2 level C- n2 = 4, 5, 6 …,  levels to the n1 = 3 level D- n2 = 5, 6, 7 …,  levels to the n1 = 4 level 6- According to … " It is impossible to know simultaneously both the momentum (mass times velocity) and the position of a particle with certainty." a- Heisenberg uncertainty principle b- De Broglie's conclusion c- Bohr's theory d- Aufbou principle 7- The possible values for the principle quantum number (n) are … a- 1, 2, 3, …∞ b- -1, -2, -3, …∞ c- 0, 1, 2, 3, …∞ d- 0, -1, -2, -3, …∞ 8- The correct set of quantum number (n, l, ml and ms) for the 3rd electron in the 4f subshell is … a- 4, 3, -1 and +½ b- 4, 3, 1 and +½ c- 4, -3, +1 and +½ d- 4, +3, +3 and -½ 9- Which of the following orbital diagram is allowed for the nitrogen atom (Z = 7). A- B- 1s 2s 2p 1s 2s 2p C- D- 1s 2s 2p 1s 2s 2p 10- The number of unpaired electrons in the ground state electronic configuration of aluminum is …. (Atomic numbers is 13 for Al atom.) a- 0 b- 1 c- 2 d- 3