Calcium and Ionic Bonding Concepts

The video explains how to write the Lewis structure for calcium hydride (CaH2), an ionic compound. It details the process of setting up the structure by placing calcium and hydrogen atoms, transferring electrons from calcium to hydrogen, and finalizing the structure with appropriate charges and brackets. The video emphasizes the ionic nature of the compound, where electrons are transferred rather than shared.

What group is calcium in on the periodic table?

• Group 1

• Group 3

• Group 2

• Group 4

What type of charge does hydrogen have when bonded to a metal?

• Positive charge

• Neutral charge

• One minus charge

• Two minus charge

What type of compound is calcium hydride?

• Ionic compound

• Metallic compound

• Molecular compound

• Covalent compound

How many valence electrons does calcium have?

• Four

• Three

• Two

• One

What happens to the electrons in calcium hydride?

• They remain with calcium

• They are transferred from calcium to hydrogen

• They are transferred from hydrogen to calcium

• They are shared equally

What charge does calcium have after losing electrons?

• Two plus

• One plus

• One minus

• Two minus

What is the charge on the hydride ion?

• H-

• H2+

• H2-

• H+

Why are brackets used in the Lewis structure of calcium hydride?

• To indicate the presence of covalent bonds

• To denote transferred electrons

• To show shared electrons

• To highlight the metal atoms

What attracts the ions to each other in calcium hydride?

• Nuclear force

• Electrostatic force

• Gravitational force

• Magnetic force

What is the significance of the ionic bond in calcium hydride?

• It creates a metallic bond

• It forms a covalent network

• It allows for electron sharing

• It balances the charges between ions