Question

1. electronegativity generally increases as you move:

a) down a group and left across a period
b) up a group and right across a period
c) down a group and right across a period
d) up a group and left across a period

1. which element has the highest electronegativity?

a) oxygen
b) fluorine
c) nitrogen
d) chlorine

1. as you go down a group in the periodic table, the atomic radius:

a) increases
b) decreases
c) remains constant
d) fluctuates randomly

Explanation:

• For question 6, electronegativity increases up a group (due to decreased atomic radius and increased effective nuclear charge) and right across a period (due to increasing nuclear charge and decreasing atomic radius).
• For question 7, fluorine has the highest electronegativity on the Pauling scale as it has a strong attraction for electrons due to its small atomic size and high nuclear charge.
• For question 8, as you go down a group in the periodic table, new electron - shells are added, increasing the distance between the nucleus and the outermost electrons, so the atomic radius increases.

Answer:

1. B. Up a group and right across a period
2. B. Fluorine
3. A. Increases