Exploring Periodic Table Trends: Groups, Periods, and Reactivity

What direction do groups in the periodic table run?

• Horizontally

• Diagonally

• In a circular pattern

• Vertically

How many energy levels does an element in period 3 have?

• 3

• 2

• 5

• 4

What does the top number in a group indicate?

• Number of protons

• Atomic mass

• Number of neutrons

• Group number

How many valence electrons does group 15 have?

• 7

• 5

• 8

• 3

Which element has 4 energy levels and 8 valence electrons?

• Krypton

• Oxygen

• Argon

• Neon

Which group contains the most reactive metals?

• Group 1

• Group 17

• Group 13

• Group 18

What characteristic do elements in the same group share?

• Same atomic mass

• Same number of protons

• Similar reactivity

• Same number of energy levels

Which group is known as the noble gases?

• Group 18

• Group 13

• Group 1

• Group 17

What determines the reactivity of an atom?

• Atomic mass

• Number of valence electrons

• Number of protons

• Number of neutrons

Which group has elements that are highly reactive non-metals?

• Group 13

• Group 1

• Group 17

• Group 18