IG Chapter 3 The periodic table

Which one of the following names does not correspond to a group of elements on the Periodic table?

• Alkali metal

• Noble gas

• Non-metal

• Halogen

Which row describes how the elements are positioned on the Periodic table and the names used?

• A

• B

• C

• D

Which property of elements increases as you move across the Periodic table?

• The number of electron shells

• The number of outer shell electrons

• The metallic character

• The reactivity

Element Z forms an ion with a 2- charge.

Which group of the Periodic Table is element Z found in?

• 1

• 2

• 6

• 7

Element X is found in Group 7 of the Periodic Table.

Which properties are NOT typical of element X?

• Poor conductor of electricity

• Toxic

• Diatomic in molecule

• Gases in room temperature

Which of below correctly describes how the early Periodic table was used to classify the known elements and was used to predict the properties of the elements that had not yet been discovered?

• Elements in the same Period displayed similar properties.

• The arrangement of the known elements provided trends in behaviour which was used to make predictions about the unknown elements.

• Elements in different Groups displayed similar properties.

• There is no rules detected.

Potassium and krypton are elements in Period 4. Potassium is at the beginning of the period and is more metallic than krypton which is at the end of the period. What makes potassium more metallic than krypton?

• It has less electrons than krypton.

• It has less protons than krypton.

• It has less electron shells.

• It has less outer shell electrons.

The elements of the Periodic table can be broadly classified into two main characters which are metals and nonmetals. Which statements are correct?

• Magnesium is less metallic than silicon.

• Boron is more metallic than lithium.

• Carbon is less metallic than beryllium.

• Sodium is less metallic than aluminium.

The metallic character of the elements changes as you move across a period.

Which statement explains this trend?

• The mass number increases as you move across.

• The physical properties change as you move across.

• The tendency to lose or gain electrons changes moving across.

• The atomic number changes as you move across.

Which group and period can the element with an electronic configuration of 2,8,6 be found in?

• group 6 period 3

• group 6 period 8

• group 3 period 6

• group 8 period 2