Chapter 4

The scientist who classified elements into four groups: gases, non-metals, metals and metal oxides.

• Antoine Lavoisier

• Johann W. Dobereiner

• John Newlands

• Lothar Meyer

The scientist who proposed the Law of Octaves.

• Antoine Lavoisier

• Johann W. Dobereiner

• John Newlands

• Lothar Meyer

The scientist who constructed the triad groups consisting of three elements with similar chemical properties.

• Antoine Lavoisier

• Johann W. Dobereiner

• John Newlands

• Lothar Meyer

Which of the following is the symbol of magnesium?

• K

• Au

• mg

• Mg

Which of the following is the symbol of copper?

• Cu

• CU

• cu

• CUTE

Which of the following is the symbol of Fluorine?

• F

• Au

• Hg

• Fl

Potassium atom has an electron arrangement of 2.8.8.1

Without referring to periodic table, suggest the group number of potassium.

• Group 1

• Group 2

• Group 11

• Group 18

Carbon has a proton number, 6.

Which of the following shows the correct electron arrangement of carbon?

• 4.2

• 2.4

• 1.5

• 3.3

Chlorine atom has an electron arrangement of 2.8.7

Chlorine element would be located on period _____ in periodic table.

• 1

• 2

• 3

• 4

Argon atom has an electron arrangement of 2.8.8

Where does the argon locates on periodic table?

• Group 3, Period 8

• Group 18, Period 3

• Group 2, Period 3

• Group 10, Period 8