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Chemistry Chapter on Ions and Electron Configuration

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Chemistry Chapter on Ions and Electron Configuration

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Questions and Answers

What is an ion?

An atom that has gained or lost electrons (correct)

An atom that has gained or lost protons

An atom that has gained or lost neutrons

An atom with a neutral electrical charge

A negative ion is formed when an atom loses electrons.

False (B)

What is the total number of electrons in a neutral atom of Sodium (Na) according to the diagram?

11 (correct)

What is the goal of an atom in terms of its outer electron shell?

to have a full outer electron shell Signup and view all the answers

A positive ion has more ______ than electrons.

protons Signup and view all the answers

According to the diagram, Chlorine (Cl) gains one electron to become a positively charged ion.

False (B) Signup and view all the answers

Match the ion description with the correct notation:

Positive ion having lost 1 electron = Na⁺ Positive ion having lost 2 electrons = Mg²⁺ Signup and view all the answers

How many valence electrons does a neutral atom of Chlorine (Cl) have?

7 Signup and view all the answers

When Sodium (Na) loses an electron it becomes a ______ ion.

Na⁺ Signup and view all the answers

Match the element with its number of protons:

Sodium (Na) = 11 Chlorine (Cl) = 17 Signup and view all the answers