In 1959 Lyttleton and Bondi suggested that the expansion of the Universe could be ex plained...
please Solve part D and E!!!!! PLEASE AND THANK YOU acc1 Our discussion of the Bohr model of the hydrogen atom was non-relativistic throughout, which was justified because the velocity of the electron in the nth state of Bohr's hydrogen atom was v= (1) 1377 where a = 1 is the fine-structure constant, and qe is the electron charge, ħ is (the reduced) Planck's constant, and c is the speed of light. Clearly, as n grows, the speed does become...
The smallest chemical units of matter are atoms b) molecules c) protons d) neutrons e) electrons . Which of the following would have the largest size? a) an atom b) a molecule c) a proton d) a neutron e) an electron 3. Isotopes of an element differ in the number of a) protons in the nucleus b) electrons in the nucleus © neutrons in the nucleus d) electron clouds e) energy levels they contain 4. VO The atomic number represents...