Question: Which of the following molecules is polar?
Options:
CCl4
CO2
NH3
CH4
Correct Answer: NH3
Solution:
Ammonia (NH3) is polar due to its trigonal pyramidal shape and the presence of a lone pair on nitrogen.
Which of the following molecules is polar?
Practice Questions
Q1
Which of the following molecules is polar?
CCl4
CO2
NH3
CH4
Questions & Step-by-Step Solutions
Which of the following molecules is polar?
Step 1: Understand what a polar molecule is. A polar molecule has a positive end and a negative end due to an uneven distribution of electrons.
Step 2: Look at the structure of ammonia (NH3). It has three hydrogen atoms and one nitrogen atom.
Step 3: Identify the shape of ammonia. It has a trigonal pyramidal shape because the nitrogen atom has a lone pair of electrons that pushes the hydrogen atoms down.
Step 4: Recognize that the nitrogen atom is more electronegative than hydrogen, meaning it pulls the shared electrons closer to itself.
Step 5: Conclude that because of the shape and the difference in electronegativity, ammonia has a positive end (hydrogens) and a negative end (nitrogen), making it a polar molecule.
No concepts available.
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