Periodic Table: Trends

Question 1

Electronegativity
(how well an element can attract electrons)

Answer 1

-Noble gases are not electronegative
- F is the most electronegative atom

Ex: Cl has a higher electronegativity than K

Increases: Up and to the right

Question 2

Ionization energy

• There are exceptions (12234556)
  (energy required to remove an electron)

Answer 2

exceptions: 2A has a higher IE than 3A, and 5A has a higher IE than 6A

Increases: Up and to the Right

(if there have the same distance, it can’t be told which has a higher IE)

Also, Noble gases tend to have the highest since they have a full valence level, and Alkali metals have smallest(easier to remove)

Question 3

Electron Affinity

• Exceptions included (12234556)
  (Energy required to add an electron)

Answer 3

Energy required to add an electron

• Exceptions: 1A is higher than 2A, and 4A is higher than 5A

Increase: Up and right

Also, F has the highest electron Affinity

Metals: low or non-existent, since they don’t gain electrons
Noble gasses= 0

Question 4

Atomic Radii And Ion size

Answer 4

Atomic radii: one half the distance between the nuclei(distance from nucleus to outer energy level)
ex: smallest to largest atomic radii: Ga+3, In+, Br-, I-

Increase: down and left

Question 5

Metallic character

Answer 5

It is the ease of an element to give away its valence electrons.

Depends on:
- the valence electron’s
- effective nuclear charge
-distance from the nucleus (increase: down and left)

Question 6

For bonus marks on Quiz

Answer 6

Chemistry is the glue that holds the sciences together