Chemical Bonds MCQ Exam: Quiz!

An ion is an atom that has lost or gained electrons. When an atom loses electrons, it becomes positively charged and is called a cation. Conversely, when an atom gains electrons, it becomes negatively charged and is called an anion. Therefore, an ion is the correct term to describe an atom that has lost or gained electrons.

Fluorine is a nonmetal and sodium is a metal. Fluorine needs electrons and sodium wants to give electrons up, so it would be an ionic bond.

cobalt and iron are both metals so they would bond metallically

A chemical formula is a representation of a compound that shows the elements present in the compound and the ratio of atoms of those elements. It provides information about the composition of the compound and helps in understanding its structure and properties. By using chemical symbols and subscripts, a chemical formula conveys the type and number of atoms in a compound, allowing scientists to accurately describe and communicate chemical compositions.

Noble gases have reached an octet configuration and are more stable as they are than they would be after bonding with any other atoms.

A compound that is composed of only two elements is called a diatomic molecule, diatomic, diatomic compound, or binary compound.

Because oxygen is a nonmetal it would form a covalent bond. Because the atoms are identical, they would have the same pull on the shared electrons so it would be a nonpolar bond.

Ba(N3)2 contains 2 nitrate ions (N3-) and each nitrate ion contains 3 oxygen atoms. Therefore, there are a total of 2 x 3 = 6 oxygen atoms present in Ba(N3)2.

Oxidation numbers are numbers that are related to the number of valence electrons one needs to gain or lose to have a stable outer shell. Specifically it is the charge on the most common ion that would be formed.

In this question, the number of potassium atoms is being asked in 4S. The symbol "S" is not commonly used to represent any element, so it is likely a typo or an incomplete question. Without further information, it is not possible to determine the correct answer or provide an explanation.

Nitrogen and oxygen are both nonmetals making it covalent, but oxygen would have a stronger pull on the shared electrons, meaning it would be polar.

"poly" means many, "atomic" refers to the idea that it is made of atoms, and "ion" means it has a charge. In other words, it is a group of atoms that are bonded together covalently but acts as a single charged atom.