# The Quantum-Mechanical Model of the Atom

## Presentation on theme: "The Quantum-Mechanical Model of the Atom"— Presentation transcript:

The Quantum-Mechanical Model of the Atom
Chemistry: A Molecular Approach, 1st Edition Nivaldo J. Tro Chapter 7 The Quantum-Mechanical Model of the Atom

Tro Chemistry: A Molecular Approach
Determine the wavelength (in nm) of an X-ray with a frequency of 4.2 x 1018 Hz. 7.1 x 10–11 7.1 x 10–2 1.3 x 1027 1.4 x 1010 7.1 x 10–18 Tro Chemistry: A Molecular Approach

Tro Chemistry: A Molecular Approach
Determine the wavelength (in nm) of an X-ray with a frequency of 4.2 x 1018 Hz. 7.1 x 10–11 7.1 x 10–2 1.3 x 1027 1.4 x 1010 7.1 x 10–18 Tro Chemistry: A Molecular Approach

Tro Chemistry: A Molecular Approach
A major league pitcher throws a g baseball at a speed of 92.5 mph (41.4 m/s). What is the de Broglie wavelength of the baseball in meters? 4.81 x 10–38 4.81 x 10– 41 1.08 x 10– 34 1.08 x 10– 37 1.08 x 10– 40 Tro Chemistry: A Molecular Approach

Tro Chemistry: A Molecular Approach
A major league pitcher throws a g baseball at a speed of 92.5 mph (41.4 m/s). What is the de Broglie wavelength of the baseball in meters? 4.81 x 10–38 4.81 x 10– 41 1.08 x 10– 34 1.08 x 10– 37 1.08 x 10– 40 Tro Chemistry: A Molecular Approach

Tro Chemistry: A Molecular Approach
An electron in a hydrogen atom in the n = 6 energy level emits kJ/ mol of energy in a transition to a lower energy level. To what energy level does the electron fall? 1 2 3 4 5 Tro Chemistry: A Molecular Approach

Tro Chemistry: A Molecular Approach
An electron in a hydrogen atom in the n = 6 energy level emits kJ/ mol of energy in a transition to a lower energy level. To what energy level does the electron fall? 1 2 3 4 5 Tro Chemistry: A Molecular Approach

Tro Chemistry: A Molecular Approach
Which of the following transitions for an electron in a hydrogen atom would release the largest quantum of energy? n = 3 → n = 1 n = 4 → n = 3 n = 1 → n = 4 n = 2 → n = 1 Tro Chemistry: A Molecular Approach

Tro Chemistry: A Molecular Approach
Which of the following transitions for an electron in a hydrogen atom would release the largest quantum of energy? n = 3 → n = 1 n = 4 → n = 3 n = 1 → n = 4 n = 2 → n = 1 Tro Chemistry: A Molecular Approach

Which of the following is NOT an allowed set of quantum numbers?
n = 4 l = 3 ml = 3 n = 1 l = 0 ml = 0 n = 5 l = 4 ml = – 2 n = 2 l = 1 ml = 0 n = 3 l = 3 ml = – 2 Tro Chemistry: A Molecular Approach

Which of the following is NOT an allowed set of quantum numbers?
n = 4 l = 3 ml = 3 n = 1 l = 0 ml = 0 n = 5 l = 4 ml = – 2 n = 2 l = 1 ml = 0 n = 3 l = 3 ml = – 2 Tro Chemistry: A Molecular Approach