Below Are Four Pairs of Atoms and Ions

question 31

Multiple Choice

Below are four pairs of atoms and ions. In which pair is the larger of the two species written first?

• A) S^2- and S
• B) Cu²⁺ and Cu
• C) O and O^₂-
• D) Cr³⁺ and Cr

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Definitions:

Comparable Interface

An interface in Java that imposes a natural ordering on the objects of each class that implements it, used to allow objects to be compared.

Java.util

The java.util package provides a collection of utility classes that are useful for tasks involving collections, dates, and system properties.

Java.io

A package in Java that contains classes for system input and output through data streams, serialization, and the file system.

Java.awt

A package in Java that contains classes for creating graphical user interfaces and for painting graphics and images.