Unit 2 Review

What is a subatomic particle with a positive charge that is in the nucleus of an atom?

• neutron

• proton

• electron

• valence electron

How many protons does sulfur have?

• 32

• 16

• 48

• 12

The total number of protons and neutrons in an atom is called the...

• Atomic number
• Proton number
• Mass number
• Weight number

What element is represented in this Bohr Model? 

• Carbon
• Hydrogen
• Aluminum
• Lithium

How many total electrons does O^-2 (an oxide ion) have?

• 8
• 10
• 6
• 18

How many total electrons does Na⁺¹ (a sodium ion) have?

• 10
• 11
• 12
• 22

According to the isotopic notation for copper-63, how many neutrons are present in this type of atom?

• 29
• 34
• 63
• 92

How many protons does this isotope of titanium have?

• 48
• 22
• 26
• 70

Which of the following is the atomic number of an alkali metal?

• 31
• 20
• 18
• 19

Gold (Au)

• Transition Metal
• Alkali Metal
• Alkaline Earth Metal
• Heavy Metal