Ionic Bonds and Dot and Cross Diagrams

These flashcards cover key concepts related to ionic bonds, the formation of ions, and how to represent them using dot and cross diagrams.

What are ions and how are they formed?

Ions are formed when atoms lose or gain electrons.

What happens to a sodium atom to form a sodium ion?

A sodium atom will lose one electron to become a sodium one plus ion.

What does chlorine need to form a chloride ion?

Chlorine needs to gain one electron to complete its outer shell, forming a one minus chloride ion.

What is the result of the electron transfer between sodium and chlorine?

Both atoms become ions with full outer shells of electrons.

What kind of bond forms between oppositely charged ions?

An ionic bond forms between oppositely charged ions, which are attracted to each other.

What is a dot and cross diagram used for?

Dot and cross diagrams are used to represent the bond formation between atoms by showing electron transfer.

How are electrons represented in a dot and cross diagram?

Electrons from one atom are represented as dots and those from another atom as crosses.

In the dot and cross diagram for magnesium chloride, how many chlorine atoms are involved?

There are two chlorine atoms involved in the formation of magnesium chloride.

What charge does magnesium have after the transfer of electrons?

Magnesium has a two plus charge after losing two electrons.

How do you represent the charge of ions in a diagram?

The charge is shown in the top right corner within big square brackets.