Alkali metals, Halogens, and Inert Gases

Which of the following element is an example of Halogen

• Sodium

• Magnesium

• Fluorine

• Carbon

Highly reactive

• Alkali metal

• Noble gases

• Rare earth metals

• Neon

Which of the following is not an alkali metal?

• Cesium

• Francium

• Hydrogen

• Sodium

Which of the following is an inert gas?

• Hydrogen

• Helium

• Oxygen

• Carbon dioxide

------ are poor conductors of heat and electricity

• Transition metals

• All metals

• Non metals

• Copper

The electrons in the outer most energy level of an atom is also known as

• Active electrons

• Inert electrons

• Valence electrons

• None of the above

Which of the following element is a liquid at room temperature?

• Carbon

• Mercury

• Fluorine

• Antimony

Noble gases are inert because

• They are highly reactive

• They are unreactive

• They are noble

• They have 8 electrons in their outer most energy level

Alkaline earth metals are always found as compounds in nature because

• They are metals

• They are essential nutrients

• They are highly reactive

• None of the above

Which of the follwing group of elements have 7 electrons in their outer most energy level?

• Actinides

• Noble gases

• Lanthanides

• Halogens