Barium Hydroxide Ion Properties

The video explains how to write the Lewis structure for barium hydroxide (Ba(OH)2). It begins by identifying barium as a metal and hydroxide as a polyatomic ion, forming an ionic compound. The video details the charges of barium and hydroxide ions, explaining electron transfer and charge balance. It then demonstrates drawing the Lewis structure, highlighting the use of brackets for ions, and concludes by noting that barium hydroxide forms a crystal structure composed of repeating formula units.

What type of ion is hydroxide considered as?

• Cation

• Polyatomic ion

• Anion

• Monatomic ion

What is the charge of barium in barium hydroxide?

• 2+

• 1+

• 1-

• 2-

How many hydroxide ions are needed to balance the charge of one barium ion?

• Three

• Four

• Two

• One

What happens to barium's electrons in barium hydroxide?

• They remain with barium.

• They are lost to the environment.

• They are shared with hydroxide ions.

• They are transferred to hydroxide ions.

What charge do hydroxide ions have after gaining electrons?

• Positive

• Negative

• Neutral

• No charge

What is used to represent the ions in the Lewis structure of barium hydroxide?

• Quotation marks

• Parentheses

• Brackets

• Curly braces

What is the term for the repeating pattern in which barium hydroxide exists?

• Molecule

• Ion

• Crystal

• Atom

What is the term for the smallest unit of barium hydroxide in its crystal form?

• Ion

• Molecule

• Formula unit

• Atom

Who is the presenter of the video on barium hydroxide?

• Dr. A

• Dr. B

• Dr. D

• Dr. C