Exploring the Periodic Table: Elements and Their Properties

Which group of elements is known for being highly reactive and having one valence electron?

• Transition metals

• Halogens

• Alkali metals

• Noble gases

What charge do ions of alkaline earth metals typically form?

• +2

• +1

• -2

• -1

Which of the following elements is a noble gas?

• Sulfur

• Neon

• Oxygen

• Chlorine

Halogens are known for having how many valence electrons?

• 8

• 7

• 6

• 5

Which element is the most electronegative?

• Fluorine

• Oxygen

• Chlorine

• Nitrogen

What is a characteristic property of metals?

• They have low melting points

• They do not conduct electricity

• They are malleable

• They are insulators

What does the atomic number of an element represent?

• Number of neutrons

• Number of protons

• Number of electrons

• Atomic mass

How many protons does an atom of fluorine have?

• 9

• 10

• 8

• 7

Which of the following elements is a transition metal?

• Cobalt

• Magnesium

• Potassium

• Selenium

Which element is chemically inert and very stable?

• Nickel

• Phosphorus

• Argon

• Carbon