Rubidium Oxide and Ionic Bonds

The video tutorial explains how to write the chemical formula for rubidium oxide. It begins by identifying the element symbols for rubidium (Rb) and oxygen (O), noting that the compound is ionic due to the metal and non-metal combination. The tutorial discusses the ionic charges of rubidium (+1) and oxygen (-2) and explains the need to balance these charges to achieve a neutral compound. By placing a subscript of 2 next to rubidium, the charges are balanced, resulting in the formula Rb2O. The video concludes with a presentation of the final formula.

What is the element symbol for rubidium?

• Rd

• Re

• Rb

• Ru

Which element does the symbol 'O' represent in the context of rubidium oxide?

• Osmium

• Oxygen

• Osmium

• Oganesson

What type of bond is formed between rubidium and oxygen in rubidium oxide?

• Metallic

• Ionic

• Hydrogen

• Covalent

What is the ionic charge of rubidium in rubidium oxide?

• 1+

• 2+

• 1-

• 2-

What is the correct formula for rubidium oxide?

• Rb2O2

• RbO

• RbO2

• Rb2O