Ionic Bonding

Valence Electron

An electron in the highest occupied energy level of an atom

Octet Rule

Atoms react so as to acquire the stable electron structure of a noble gas.

Electron Dot Structure

A depiction of valence electrons around the symbol of an element.

Ionic Bond

The force of attraction binding oppositely charged ions together.

How many valence electrons does nitrogen have ?

5 valence electrons

How do the alkali earth metals obey the octet rule when reacting to form compounds?

They give up 2 electrons.

What is the electron configuration of the Magnesium ion?

The Magnesium ion has the same electron configuration as Neon.

What is the charge of a beryllium ion?

2+, it loses 2 electrons.

How many electrons does potassium have to give up to achieve a noble gas electron configuration?

1 electron

What is the formula of the ion formed when oxygen achieves noble-gas electron configuration?

O^2-

Which group has a charge of 1- when its elements form ions?

The Halogens

How many electrons does phosphorus need to achieve noble gas electron configuration?

Nitrogen gains 3 electrons when it forms an ion.

The electron configuration of a chlorine ion is the same as which noble gas?

Argon

What is the net charge of any ionic compound?

0 - Ionic compounds are electrically neutral.

A compound composed of anions and cations is called an ________________.

Ionic Compound

What is the formula of Magnesium Fluoride?

MgF2

What is the charge of a cation?

Positive, +

What is the charge of an anion?

Negative, -

How do cations form?

Cations form when neutral atoms lose electrons. This creates a cation with a positive charge.

How do anions form?

Anions form when neutral atoms gain electrons. This creates an anion with a negative charge.

How do the elements in Groups 5A, 6A, & 7A form ions?

They gain electrons to achieve noble gas configuration and form anions with a negative charge.

What is the formula unit of Aluminum oxide?

Al2O3