What is the physical state of Chlorine at room temperature?

• Gaseous

• Liquid

• Solid

What is the physical state of Bromine at room temperature?

• Gaseous

• Liquid

• Solid

What is the physical state of Iodine at room temperature?

• Gaseous

• Liquid

• Solid

Which group of elements are the most reactive metals?

• Alkali metals

• Alkali earth metals

• Halogens

• Noble gases

Which group of elements are the most reactive non-metals?

• Alkali metals

• Alkali earth metals

• Halogens

• Noble gases

Which group of elements are unreactive?

• Alkali metals

• Alkali earth metals

• Halogens

• Noble gases

Which of the following element is the most reactive non-metal?

• Fluorine

• Chlorine

• Bromine

• Iodine

Which of the following element is the most reactive metal?

• Sodium

• Potassium

• Rubidium

• Francium

Sodium atom has 11 protons and Chlorine atom has 17 protons. They are located at the same period in the Periodic Table.

Which one has bigger atomic radius?

• Sodium

• Chlorine

Which of the following element has the biggest atomic radius?

• Lithium (Li)

• Sodium (Na)

• Potassium (K)

• Rubidium (Rb)