Atomic Structure Practice Chemistry

What is the element shown?

• Oxygen

• Chlorine

• Sulfur

• Copper

• None of these

Every Argon atom has ___.

• 18 protons

• 18 neutrons

• 18 electrons

• a mass number of 36

At atom has 9 electrons and a charge of +3. What element is this?

• fluorine

• nitrogen

• sodium

• magnesium

An atom has 38 neutrons and a mass number of 65. What element is this?

• cobalt

• copper

• carbon

• chromium

What is the atomic number of an atom that has 47 protons, 60 neutrons and 47 electrons?

• 47

• 60

• 107

• 0

In a sample of copper, all of the atoms have ___ atomic number.

• the same

• different

• the same OR different

How many neutrons are in the atom shown?

• 23

• 12

• 35

• 11

What is the correct nuclear symbol for an atom with 5 protons and 6 neutrons?

• 
• 
• 
• 

Which atom has a nucleus of 13 protons and 14 neutrons?

• Co

• Si

• Na

• Al

What is the element shown?

• Arsenic

• Chlorine

• Zinc

• Oxygen