As the difference in electronegativity between bonded atoms increases, the polarity of the bond

Here are the solutions to the questions:

30. As the difference in electronegativity between bonded atoms increases, the polarity of the bond

• The greater the difference in electronegativity between two bonded atoms, the more polar the bond. A large difference leads to a significant separation of charge, creating a dipole.
• The correct option is (b) increases.

31. Which of the following physical properties decreases down a group in the periodic table?

• a) atomic radius: Increases down a group due to the addition of new electron shells.
• b) ionic radius: Increases down a group for the same reason as atomic radius.
• c) electronegativity: Decreases down a group because the valence electrons are further from the nucleus and