ionic and covalent bonds

A molecule is a neutrally charged group of atoms held together by one or more ______ bonds.

covalent

An ion and its parent atom have the same

parent ion

What is the formula for the compound formed by the barium ion, Ba²⁺, and the hydroxide ion, OH^–?

Ba(OH)₂

When ions are formed,

energy can be released or absorbed.

The ion formed by an atom of a metal is a(n)

cation

The correct Lewis structure for the boron atom has

three single valence electrons.

In a double bond, two atoms share a total of _____ electrons.

two

An anion

is an ion with a negative charge.

A covalent bond in which two atoms share three pairs of electrons is called a(n)  _____ bond.

triple

In naming a binary ionic compound, the name of the ______ appears first followed by the name of the ______ .

metal cation, nonmetal anion

An electron that occupies the outermost energy level of an atom is known as a(n) ______ electron.

valence

The correct Lewis structure for a Group 18 atom has

four pairs of valence electrons.

Question 13

The chemical formula for the compound potassium fluoride, which contains K⁺ and F^– ions, is..

KF

Will fluorine (atomic number 9) form an anion, or a cation? Why?

fluorine forms an anion. it has 7 valence electrons, because it’s missing 1 to have a full octect, its charge is -1. (anion)

In many compounds, atoms of main-group elements form ions so that the number of electrons in the outermost energy levels of each ion is _

8.

A bond formed by atoms that share one or more pairs of electrons is called a(n) ______ bond.

covalent

In a Lewis structure of a molecule, a pair of long, parallel dashes correctly represents a(n) ____ bond.

double

Why do most atoms form chemical bonds?

Most atoms form chemical bonds because their electron shells aren't happy/full, so they bond to satisfy the octet rule.

What is the formula for the compound formed by calcium ions, Ca²⁺, and chloride ions, Cl^–?

CaCl₂

An atom or group of atoms that has an electrical charge because it has either lost or gained one or more electrons is a(n) _____.

ion