Strontium Hydroxide and Ionic Compounds

The video tutorial explains how to write the Lewis structure for strontium hydroxide (Sr(OH)2). It begins by introducing the components: strontium, a metal, and hydroxide, a polyatomic ion. The tutorial details the Lewis structure for strontium, highlighting its two valence electrons. It then describes the hydroxide ion and its negative charge due to electron transfer from strontium, forming an ionic bond. The video concludes by discussing the repeating pattern of the Lewis structure in a crystal, known as a formula unit.

What is the main component of strontium hydroxide that is a polyatomic ion?

• Hydrogen

• Strontium

• Oxygen

• Hydroxide

In which group of the periodic table is strontium found?

• Group 2

• Group 4

• Group 1

• Group 3

How many valence electrons does strontium have?

• One

• Two

• Three

• Four

What charge does each hydroxide ion carry?

• Neutral

• Positive

• Negative

• Variable

What happens to strontium's electrons during the formation of strontium hydroxide?

• They are shared with hydroxide

• They are transferred to hydroxide

• They are lost to the environment

• They remain with strontium

What is the ionic charge of strontium after losing electrons?

• 2-

• 2+

• 1+

• 1-

What is the term used to describe the repeating pattern in a crystal of strontium hydroxide?

• Ionic structure

• Crystal lattice

• Molecular unit

• Formula unit

What does the Lewis structure of strontium hydroxide help us understand?

• The taste of the compound

• The arrangement and charges of ions

• The melting point of the compound

• The color of the compound