When an atom absorbs energy the atom jumps from its ground state to the excited state. Ground state is the most stable and lowest energetic state of an atom where the excited states is the higher energetic states. In ground state the electrons of an atom is arranged by the rules of aufbau's principle, Pauli's exclusion principle and Hund's multiplicity principle. So when it absorbs some radiation one of more electrons from its valence shell get excited and it goes to higher orbits.
1. (2pt) Explain the mechanism by which atoms absorb light, i.e. what happens when an atom...
Number 2. Thank you 2. (2pt) Why do atomic emission spectra come in the form of lines instead of broad bands that span whole regions of the electromagnetic spectrum? Atoms have quantized energy Tevels, they react to principal quantum numbers n=1,2,..
17. When francium 223 87 Fr undergoes alpha decay, what daughter nucleus is produced? 222 A) Rn 86 B) 233 Ra 88 C) 221 Ро 84 219 D) At 85 E) 221 At 85 18. When krypton 89 Kr undergoes betat decay, what daughter nucleus is produced? 36 89 85 88 89 B) Br C) Se D) Sr E) Rb 35 34 38 37 A) 88 Rb 37 236 19. Which one of the following occurs when Ra undergoes beta...