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Exam 3: Ionic Compounds

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Question 31

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The ion symbol for the ferric ion is Fe²⁺.

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Question 32

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What is the correct formula for the ionic compound formed from the cation X³⁺ and the anion Y^2- that results in zero overall charge?

A) X₂Y₃
B) X₂Y
C) X₃Y₂
D) XY₃

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Question 33

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A polyatomic ion is an ion that forms more than one charge.

What is the chemical formula for the ionic compound calcium selenide?

Ionic compounds are usually solids at room temperature.

The electrons in the outermost occupied shell of an atom are called the ________ electrons.

The formula for stannic fluoride is SnF₄.

A main group element is especially stable when it possesses eight total electrons.

What is the formula for the ionic compound formed when magnesium and oxygen combine?

A cation is positively charged,and has more electrons than the neutral atom.

Ionic compounds are composed of individual molecules,discrete groups of atoms that share electrons.

The (II)in the name of the ionic compound lead (II)acetate specifically indicates that there are two lead ions present in the compound.

The formula for the ammonium ion is ________.

What is the charge of the ions formed by group 7A elements?

Elements in group 2A form ions with a +2 charge.

Neutral atoms always contain an equal number of protons,neutrons,and electrons.

What is the charge on the nickel ion in the compound NiCl₂?

An ionic compound is a pure substance formed by chemically combining two or more nonmetal atoms together.

What is the correct formula for the ionic compound formed from the cation X²⁺ and the anion Y^- that results in zero overall charge?

What is the symbol for the ion formed by magnesium?