Which of the following compounds contains a metal? A) CO2 B) LiCl C) H?O D) CH4 E) PBr3
The Correct Answer and Explanation is:
The correct answer is B) LiCl.
Here’s an explanation for why:
- A) CO2 (Carbon dioxide): This compound consists of only carbon (a non-metal) and oxygen (also a non-metal). No metals are involved in the composition of CO2.
- B) LiCl (Lithium chloride): Lithium (Li) is an alkali metal, and chloride (Cl) is a non-metal. Since lithium is a metal, LiCl contains a metal.
- C) H2O (Water): Water consists of hydrogen (a non-metal) and oxygen (a non-metal). There is no metal in this compound.
- D) CH4 (Methane): Methane consists of carbon (a non-metal) and hydrogen (a non-metal), so no metal is present.
- E) PBr3 (Phosphorus tribromide): Phosphorus (P) is a non-metal, and bromine (Br) is also a non-metal. No metal is involved in this compound.
LiCl is the only compound in this list that contains a metal. In LiCl, lithium (Li), being an alkali metal, forms an ionic bond with chloride ions (Cl⁻). In general, metals like lithium form positive ions (cations) by losing electrons, and these ions interact with non-metals like chlorine to form ionic compounds like LiCl. This ionic bond is what makes LiCl different from the other compounds on the list, which involve only non-metals.
