Quiz 2: Week 3: Atomic Structure

A line spectrum is produced when an electron moves from one energy level

• into the nucleus.
• to another position in the same sublevel.
• to a higher energy level.
• to a lower energy level.

A spectrum containing a series of specific wavelength is a ______spectrum.

• line
• visible
• continuous
• balmer

The Lyman series in the hydrogen spectrum is found in

• the ultraviolet region
• the visible region
• the infrared region
• the X-ray region

The electronic configuration of the ₇N^3- ion is

• 1s² 2s² 2p³
• 1s² 2s² 2p⁶
• 1s² 2s² 2p³ 2p⁶ 3s² 3p²
• 1s² 2s² 2p³ 2p⁶ 3s² 3p⁶

What is the total number of atomic orbitals in an atom with the principal quantum number n =3

• 3
• 13
• 9

• 18

The following statements are true, EXCEPT

• The energy of a photon is proportional to its wavelength

• A line spectrum is produced when light is emitted from an excited atom

• The region in which an electron is most likely to be found is called an orbital

• Light is composed of photons of discrete energy

A wave with a longer wavelength will have a ............. frequency and ............... energy

• high, low

• high, high

• low, high

• low, low

Which of the following statements describes Bohr's atomic postulate?

• At ground state, electrons emit energy

• At excited state, electrons are very stable

• Electrons radiate energy while orbiting around the nucleus

• Electrons radiate energy when it fall back to lower energy levels

Quantum numbers have been matched with their characteristics.

Select the CORRECT matching.

• l = determine the shapes of the orbitals

• n = determines three-dimensional shape of the orbital

• m = determinations the orientation of the orbitals in space

• s = determines direction of the electron spin on its own axis.

The rule/principle which states that when the electrons are added to the orbital of equivalent energy, each orbital is filled singly with electrons of the same spin first before it is paired is

• the Aufbau principle.

• the Hund's Rule.

• the Pauli’s exclusion principle.

• the Heisenberg’s uncertainty principle.