Ionic and Polyatomic Ions Concepts

The video explores whether ammonium nitride (NH4 3N) is ionic or covalent. It begins by examining the ammonium ion (NH4) and the nitride ion, noting that both are nonmetals, which might suggest a covalent nature. However, the ammonium ion is a polyatomic ion with a positive charge, and the nitride ion has a negative charge. This results in an ionic compound due to the attraction between the three positive ammonium ions and the nitride ion with a three-minus charge. The video concludes by recommending memorization of the ammonium ion's charge.

What is the primary question being explored about NH4 3N in the video?

• Whether it is a gas or liquid

• Whether it is soluble in water

• Whether it is ionic or covalent

• Whether it is a metal or nonmetal

What type of ion is NH4 known as?

• Monatomic ion

• Diatomic ion

• Anion

• Polyatomic ion

What charge does the ammonium ion (NH4) carry?

• 0

• 3-

• 1+

• 2+

Which group does the nitride ion belong to?

• Group 7

• Group 15

• Group 18

• Group 1

What is the charge of the nitride ion?

• 1+

• 2-

• 3-

• 0

What type of bond is formed between ammonium ions and nitride ions?

• Covalent bond

• Ionic bond

• Metallic bond

• Hydrogen bond

What should you memorize about NH4 according to the video?

• Its solubility

• Its color

• Its ionic charge

• Its boiling point