Exam 3: Ionic Compounds

All ionic compounds are soluble in water.

The electron configuration for the sulfide ion is 1s²2s²2p⁶3s²3p⁶4s².

If the main group element has an electron-dot symbol of ,the charge of the resulting ion will be -2.

In crystal of an ionic compound,the cations are surrounded by anions so that the charges of the ions are balanced.

________ are negatively charged ions that have ________ electrons than protons.

How many protons and electrons are present in Co²⁺?

What period 4 element forms an ion with a -1 charge?

The ________ rule states that a main group element is especially stable when it possesses eight electrons in its outer shell.

The correct name for AuI₃ is ________.

When forming an ion,an atom with the electron-dot symbol of forms an anion with a -3 charge by the loss of three electrons.

If the main group element has an electron-dot symbol of ,the charge of the resulting ion will be +2.

What is the charge on the iron ion in the compound Fe₂O₃?

Which atom fits the electron-dot symbol shown below?

What is the ion symbol for an atom with twenty (20)protons and eighteen (18)electrons?

What is the formula for chromous cyanide?

Potassium sulfide has the chemical formula K₂S.

Ionic compounds have very high melting points compared to covalent compounds.

The chemical formulas of ionic compounds are written with the cation first,and then the anion,with subscripts to show how many of each are needed to have zero net charge.

Ionic compounds are composed of positively and negatively charged ions held together by strong electrostatic forces.

If atoms with the electron-dot symbols shown below are combined,what is the formula of the ionic compound that is formed?