Ionic Compounds and Their Properties

The video tutorial explains how to write the Lewis structure for calcium nitride (Ca3N2), an ionic compound. It begins by identifying the valence electrons of calcium and nitrogen using the periodic table. Calcium, a metal, transfers electrons to nitrogen, a non-metal, to achieve stable octets. The video details the electron transfer process, resulting in ionic charges and the formation of ionic bonds. Finally, it illustrates the Lewis structure and explains the concept of a formula unit in the context of calcium nitride.

What type of compound is calcium nitride?

• Ionic

• Metallic

• Covalent

• Molecular

How many valence electrons does a calcium atom have?

• One

• Two

• Four

• Three

In which group is nitrogen found on the periodic table?

• Group 10

• Group 2

• Group 18

• Group 5A

How many electrons does each nitrogen atom need to achieve a stable octet?

• Four

• Three

• Two

• One

What charge does a nitrogen ion have after gaining electrons?

• 1-

• 2-

• 4-

• 3-

What is the charge on a calcium ion after losing electrons?

• 4+

• 3+

• 2+

• 1+

What forms the ionic bond in calcium nitride?

• Sharing of protons

• Sharing of electrons

• Transfer of protons

• Attraction between opposite charges

What is a formula unit in the context of ionic compounds?

• A single molecule

• A single atom

• A covalent bond

• A repeating unit in a crystal

Why is the Lewis structure useful for understanding calcium nitride?

• It illustrates electron sharing

• It predicts chemical reactions

• It shows the molecular shape

• It demonstrates electron transfer

How many calcium atoms are needed for every two nitrogen atoms in calcium nitride?

• Four

• Three

• Two

• One