Group 7 - The Halogens

How many valence electrons do halogens typically have?

• 1

• 2

• 7

• 8

What happens to the melting points, boiling points, and densities of halogens as you move down Group 7 of the periodic table?

• They decrease

• They increase

• They remain constant

• They fluctuate unpredictably

Which of the following halogens is the most reactive?

• Bromine

• Chlorine

• Fluorine

• Iodine

What is the observed color change when chlorine water is added to an aqueous solution of potassium bromide?

• The solution turns dark brown

• The solution turns reddish-brown

• The solution remains colorless

• The solution turns greenish-yellow

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