Question

Bonr Model - Urpits and Energy Levels Bohr Model Bohr energy levels in joules: E,-(2.18x10-**4 in eV: E, =-(13.6e1.n=1.2.3.4.... Radii for Bohr orbits: 6. = 15.2910* m , 2 – 1,2,3,4... Radii for Bohr Orbits nm (a) What is the radius of the 3rd Bohr orbit in a Hydrogen atom in nm? 1 nm = 10-ºm. Keep 3 decimal places. Enter a number Incorrect (0.0%) Submit (3 attempts remaining) A neutral lithium atom has 3 protons in the nucleus and 3 electrons orbiting the nucleus. Removing 2 electrons results in a Li2+ ion. (b) What is the radius (in nm) of the 4th Bohr orbit in a Li2+ ion? 1 nm = 10-ºm. Keep 3 decimal places. 0.212 nm Incorrect (0.0%) Submit (3 attempts remaining) Bohr Energy Levels (c) What is the energy (in eV) of the 3rd Bohr orbit in a Hydrogen atom? Keep 3 decimal places. Enter a number eV Submit (5 attempts remaining) Jump UP: The electron in a hydrogen atom in the 3rd Bohr orbit absorbs 1.133 eV of energy and jumps to a higher orbit. (d) What is the energy (in eV) of this higher orbit? Keep 3 decimal places. Enter a number eV Submit (5 attempts remaining) (e) What is the quantum number n of this higher orbit? Round to an integer. Enter a number Submit (5 attempts remaining) Jump DOWN: The electron in the orbit in question (d) and (e) emits 3.022 eV of energy and jumps to a Lower orbit. (1) What is the energy (in eV) of this lower orbit? Keep 3 decimal places. Enter a number eV Submit (5 attempts remaining) (g) What is the quantum number n of this lower orbit? Round to an integer. Enter a number

Answer 1

Ey (6. 29x10 m) n2 Z a ) n=3 Z²l &n 5:29x16"x32 > 87 47-61x16'm co 0.476 nm b) n = 4 Z=3 VA 42 Can 5•29x10 28.21x10-"m 3 2 8A ² 0.282mm Z 2 Ens -(13.6ev) n² c) na 3 -13•6*1972 E3 2 = 1.5llen d) E.-1.571+ 1.183 0.378 eV

e) -0- 218 - I3-6X ท 1 1. 18.6 6 - 218 2 3 4 - 0

() #7 - 0318 - 08028 - - 3.1 e/ 3) -21 3-13-6x / n >> ที่. 13-6 3 4 3. 27 ที่ 22