Section: Chemistry: Section I

1) Within a specified period, an increase in atomic number is usually accompanied by:

1. an increase in atomic radius and an increase in electronegativity.
2. a decrease in atomic radius and an increase in electronegativity.
3. an increase in atomic radius and a decrease in electronegativity.
4. a decrease in atomic radius and a decrease in electronegativity.
5. None of the above.

Because of increasing affecting nuclear charge and electrostatic attraction, the atomic radius decreases. There are more protons and neutrons so electrons are needed to increase electronegativity.