2.6 The Periodic Table

This element is found in period 4 and has an electron count of 29

• Zinc (Zn)

• Copper (Cu)

• Silicon (Si)

• Potassium (K)

The element is in group 7 and has an atomic mass around 80.

• Bromine (Br)

• Mercury (Hg)

• Francium (Fr)

• Lead (Pb)

This element is found in group 2 and has a mass smaller than 40, but more than 9.

• Chlorine (Cl)

• Magnesium (Mg)

• Calcium (Ca)

• Beryllium (Be)

Selenium has how many electrons in it’s valence shell?

• 2

• 4

• 6

• 8

The element in period 4 is found to have 7 valence electrons it is called

• Silicon (Si)

• Chlorine (Cl)

• Tin (Sn)

• Bromine (Br)

Potassium belongs in which period?

• 1

• 2

• 3

• 4

Which group does Xenon belong to?

• Halogens

• Alkali Earth Metal

• Noble Gases

• Alkali Metal

Chromium is called what type of metal?

• Alkali Metal

• Alkali Earth Metal

• Transitional Metal

How many valence electrons in Silicon?

• 8

• 5

• 2

• 4

An element with 6 valence electrons is found in period 3. The element is

• Oxygen (O)

• Bromine (Br)

• Sulfur (S)

• Selenium (Se)