Exam 4: The Modern Model of the Atom

Should an oxygen atom (O) gain two electrons, it would then have the same ground state electronic configuration as an atom of neon (Ne), thus satisfying the octet rule.

Match each element with the most likely valence charge. -O

Which of the following elements is the smallest size chalcogen?

Predict the formula of the compound produced in a reaction between barium (Ba) and oxygen (O).

Modern scientists accept the notion that electrons are found in circular orbits around a central, positively charged nucleus.

Match each element with the most likely valence charge. -Si

The units of h (Planck's constant) are ________.

List the sublevels of the n = 3 principal energy level, and state the maximum number of electrons contained within each of these sublevels.

Match the following species with the corresponding electronic configuration. -S^2-

Which of the following anions will have the electronic configuration 1s²2s²2p⁶3s²3p⁶?

Microwave is radiation of a lower energy than that of visible light.

Classify each of the following as ground state, excited state, or impossible electronic configurations. -1s²2s²2p⁶3s¹3p³

What is the wavelength (in meters) of radio waves that have a frequency of 89.9 MHz? (wavelength × frequency = speed of light; speed of light = 3.0 × 10⁸ meters/sec.)

Match each element with the most likely valence charge. -Br

An electron in the excited state does not necessarily return to a ground state in a single jump.

A non-metal is an element that tends to ________ valence electrons in chemical reactions, becoming a(n) ________ in the process.

The total number of electrons that can be accommodated in 3d is ________.

Match each element with the most likely valence charge. -Li

Match the following species with the corresponding electronic configuration. -Mg²⁺

The frequency of infrared radiation that has a wavelength of 1.5 × 10³ nm is 2.0 × 10⁷ sec^-1 (given: speed of light = 3.0 × 10⁸ m/sec).