Chemistry I-H Quantum Mechanical Model Test - Spring 2024

What scientist came up with a mathematical formula, proposing that electrons travel in wavelike functions around the nucleus of an atom?

• Rutherford
• de Broglie
• Schrödinger
• Heisenberg

What is the modern depiction / model of the atom?

• Plum Pudding model
• Quantum Mechanical Model
• Electron Cloud Model
• Planetary Model

The number of energy levels for a given atom is found by looking at the:

• group number
• family number
• sublevel
• period number

Which set lists the QUANTUM NUMBERS of elements

• s, p, f, o
• s, p, d, f
• n, l, m_l, m_s

• n, p, d, f

The principal quantum number of an element is 4. What are the possible angular momentum (l) quantum numbers for this element? (what are the possible values for (l)).

• +1/2, -1/2
• -3, -2, -1, 0, 1, 2, 3
• 0,1,2

• 3

Whenever an excited hydrogen atom fall back from an excited state to its ground state, it __________.

• absorbs a photon of radiation
• emits a photon of radiation or light

• emits radiation over a range of frequencies
• absorbs specific frequencies of light.

When electrons change energy states, the amount of energy given off is equal to

• hc
• hv
• n
• cv

Scientist Max Planck proposed that a hot object radiated energy in small, specific amounts or pockets called

• waves
• hertz
• electrons
• quanta

A particle that has an outer main energy level fully occupied by eight electrons has a _________________ configuration.

• Quantum
• Noble Gas
• Incomplete
• Bohr

__________________ is the color of visible spectrum with the lowest frequency.

• blue
• purple
• red
• yellow