Ionic Compounds and Electron Transfer

This video tutorial explains how to write the Lewis structure for strontium phosphide (Sr3P2). It begins by identifying the strontium and phosphorus atoms and their properties, then explains the concept of ionic compounds and electron transfer. The tutorial covers electron configuration, achieving stability through octets, and assigning charges. It concludes with a summary of the Lewis structure for Sr3P2, highlighting the transfer of electrons from strontium to phosphorus.

What is the chemical formula for strontium phosphide?

• Sr3P2

• Sr2P3

• SrP

• Sr2P

In the context of ionic compounds, what happens to electrons?

• They are transferred from metals to non-metals.

• They are transferred from non-metals to metals.

• They remain with the original atom.

• They are shared equally.

How many valence electrons does a strontium atom have?

• Two

• One

• Four

• Three

What is the group number for phosphorus in the periodic table?

• Group 2

• Group 5A

• Group 15

• Group 10

What is the stable electron configuration for phosphorus in an ionic bond?

• Nine electrons

• Eight electrons

• Seven electrons

• Six electrons

What charge does a strontium ion have after losing electrons?

• 1+

• 2+

• 3+

• 4+

How many electrons does each phosphorus atom gain in strontium phosphide?

• Two

• Four

• One

• Three

What is the ionic charge on a phosphorus ion in strontium phosphide?

• 3-

• 2-

• 1-

• 4-

What is the purpose of using brackets in the Lewis structure of ionic compounds?

• To denote ionic charges

• To indicate shared electrons

• To show the number of atoms

• To highlight the central atom

What does the term 'formula unit' refer to in the context of ionic compounds?

• A single molecule

• A repeating pattern of ions

• An isolated atom

• A covalent bond