Unit One Study Guide

What Happens to the atomic number of an element as you move across the periodic table?

• Increase

• Decrease

• Stays the Same

• No Change

How many neutrons does Br-81 have?

• 21

• 47

• 46

• 35

What group number are halogens?

• 16

• 17

• 18

• 2

What is the number on the periodic table that is not a whole number called?

• Mass Number

• Atomic Number

• Atomic Mass Number

• Average Atomic Mass

How many Valence electrons does Neon have?

• 2

• 5

• 8

• 7

How many Valene Electrons does Sodium have?

• 0

• 1

• 2

• 9

Which of the properties of metals below makes them usable as wires?

• They are ductile

• They are malleable

• They are liquids

• They are not conductive

What type of element makes up the "stair step" on the periodic table?

• Nonmetals

• Metallikes

• Metals

• Metalloids

How many shells of electrons does rubidium have?

• 5

• 4

• 5

• 3

Which of the following is a transition metal?

• Silicon

• Aluminum

• Calcium

• Zinc