Potassium Hydride and Ionic Compounds

The video explains how to draw the Lewis structure for potassium hydride (KH), an ionic compound. It describes the transfer of an electron from potassium to hydrogen, forming a hydride ion with a negative charge and a potassium ion with a positive charge. The video highlights the ionic bond formed due to the attraction between these oppositely charged ions. It concludes with the final Lewis structure, emphasizing that hydrogen needs only two electrons for a full outer shell.

What type of compound is potassium hydride (KH)?

• Ionic

• Covalent

• Polar covalent

• Metallic

What is the ionic charge of hydrogen in potassium hydride?

• 1+

• 1-

• 2+

• 2-

Which group does potassium belong to in the periodic table?

• Group 1

• Group 2

• Group 16

• Group 17

What happens to the electron from potassium in the formation of KH?

• It is lost to the environment.

• It is shared with hydrogen.

• It remains with potassium.

• It is transferred to hydrogen.

What is the charge on the hydride ion in KH?

• 1+

• 2+

• 1-

• 2-

Why do we use brackets in the Lewis structure of KH?

• To show shared electrons

• To indicate the transfer of electrons

• To highlight the covalent bond

• To denote the molecular shape

What is the charge on the potassium ion in KH?

• 2-

• 1-

• 2+

• 1+

What attracts the potassium ion and hydride ion to each other?

• Magnetic forces

• Opposite charges

• Covalent bonds

• Similar charges

How many electrons does hydrogen need to complete its outer shell?

• Two

• Three

• One

• Four