10A-Electron Configuration

Which of these has the longest wavelength?

• Radio waves

• Gamma Rays

• Infrared

• Microwaves

Hund's rule states that

• electrons occupy orbital of lowest energy first

• orbitals can have at most 2 electrons

• orbital follow an order of energy

• electrons occupy orbital with the same spin first

The first four orbitals are ________

• a, b, c, d

• w, x, y, z

• s, p, d, f

• All of the above

According to the aufbau principle;

• an orbital may be occupied by up to two electrons

• electrons enter orbitals of lowest energy first

• one electron in every orbital in a sublevel before a second is added

• electrons in the same orbital must have different spins

What is the electron configuration of Oxygen

• 1s²2s²

• 1s²2s²2p⁵

• 1s²2s²2p⁴

• 1s²2s²2p⁶

What is the meaning of electron configuration?

• The arrangement of neutrons of an atom or molecule

• The arrangement of electrons of an atom or molecule

• The arrangement of protons of an atom or molecule

• All of the above

A photon has energy of 2.93 x 10^-25J. What is its frequency if the planck constant is 6.626 x 10^-34? Equation: E=hv

• 1.9 x 10^-58 Hz

• 2.3 x 10^-9 Hz

• 4.4 x 10⁸Hz

• 1.5 x 10⁸ Hz

What is an electron cloud?

• a cloud in the sky

• a probable location where electrons are found

• where electrons are 100% of the time

• none of the above

What is a valence electron?

• An electron inside the nucleus.

• An electron on the outermost orbital

• An electron on the innermost orbital

• None of the above

The Pauli Exclusion Principle says:

• Only 2 electrons can occupy an orbital

• Electrons fill the lowest energy level first

• Electrons in the same orbital must have opposite spins

• All of the above