Trends

The boiling points of Group 8 are as follows Fe: 2750Ru: 3900Os: 5027

Which element of group 9 would you expect to have the highest boiling point: Co, Rh, or Ir?

Answer

Co: 2870 Rh: 3727 Ir: 4130 The trend is to increase down a group

Which has the greater atomic radius Al or Si Rb or Cs

Which has the greater atomic radius Al or Si Rb or Cs Remember, atomic radius increases

down a group but decreases from left to right across a period

Give an example of a:

Rare earth metal Transition metal Metalloid Chalcogen Pnictogen Halogen

Most elements are

Metals Nonmetals Metalloids

Most elements are

Metals Nonmetals Metalloids

Identify:

The only liquid metal at room temperature

The only liquid nonmetal at room temperature

Identify

The only liquid metal at room temperatureHg: mercury

The only liquid nonmetal at room temperatureBr: bromine

Al and Si are in the same_________

Al and Si are in the same period.

Name an element which has a reactivity similar to F.

Name an element which has a reactivity similar to F.Cl, Br, IThey are in the same group

Elements in the same ___ have similar chemical properties because they have the same number of ____ ____.

Elements in the same group have similar chemical properties because they have the same number of valence electrons.

Elements in the same ___ have the same number of principle energy levels.

Elements in the same period have the same number of principle energy levels.

A (period/group) is also known as a series.

A (period/group) is also known as a series.